What is the formula of a compound that contains na+ and po43- ions? question 8 options: na3po4 napo4 na2po3 na3po3 na3p?
Answers
The phosphate ion (PO4) 3- has an ionic charge of -3 (as stated).
To balance the charges completely and form a stable molecule, three Na+ ions will combine with the PO4 3- ion.
Na3PO4
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Answer: [tex]Na_3PO_4[/tex].
Explanation:
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Here sodium is having an oxidation state of +1 called as [tex]Na^+[/tex] cation and phosphate [tex]PO_4^{3-}[/tex] is a polyatomic anion with oxidation state of -3. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral [tex]Na_3PO_4[/tex].
The cations and anions being oppositely charged attract each other through strong coloumbic forces and form an ionic bond.
Related Questions
Which type of bond would most likely form between lithium and fluorine to make lithium fluoride?
Answers
How many molecules are contained in 1.30 mol O2
Answer in units of molec
How many molecules are in 1.70 mol He
Answer in units of molec
How many molecules are in 0.0800 mol NH3
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How many molecules are in 15.6 g NO2
Answer in units of molec
What is the mass of 3.64 mol of the element iron (fe)
Answer in units of g
Answers
To find the number of molecules in a given amount of substance, use Avogadro's number. The mass of a given number of moles can be calculated by multiplying the number of moles by the molar mass.
Explanation:To determine the number of molecules in a given amount of substance, we can use Avogadro's number. Avogadro's number is approximately 6.022 × 1023 and represents the number of particles in one mole of a substance.
For example, in 1.30 mol of O2, there would be 1.30 × 6.022 × 1023 molecules of O2.
To find the number of molecules in the other given amounts, you can use the same approach.
The mass of 3.64 mol of iron (Fe) can be calculated by multiplying the number of moles by the molar mass of iron. The molar mass of iron is approximately 55.85 g/mol, so the mass of 3.64 mol of iron would be 3.64 × 55.85 g.
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How many grams of oxygen are in 50.00 g of sucrose? Show work please
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You can either search the molecular formula of Sucrose and calculate the molecular mass, or search directly the molecular mass.
Here you have both:
Molecular mass of sucrose: 342.30 g / mol
Chemical formula of sucrose: C12 H22 O11 (if you want to just must multiply the number of each atom by its atomic mass to get the molecular mass).
Calculate the number of grams of O in that molecule:
O: 11 * 16.00 g/mol = 176.0 g of O.
Now use proportions:
176 g O / 342.30 g sucrose = x / 50.00 g sucrose
=> x = 50.00 g sucrose * 176.0 g O / 342.30 g sucrose =25.71 g O.
Answer: 25.17 g
You have a 28.2-g sample of a metal heated to 95.2°c. you drop it in a calorimeter with 100. g of water at 25.1°c. the final temperature of the water is 31.0°c. assuming no heat loss to the surroundings nor the calorimeter, calculate the heat capacity of the metal.
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The heat lost by the metal should be equal to the heat gained by the water. We know that the heat capacity of water is simply 4.186 J / g °C. Therefore:
100 g * 4.186 J / g °C * (31°C – 25.1°C) = 28.2 g * Cp * (95.2°C - 31°C)
Cp = 1.36 J / g °C
An atom with one valence electron combines with an atom with seven valence electrons.
what is likely to happen to the atom with one valence electron?
Answers
The principle behind this is simple. Atoms wish to have a stable electronic configuration, which requires that their valence shell be complete. If an atom has only one valence electron, then in order to achieve stable configuration, it is easier for it to get rid of the electron and move back to its last completed shell instead of trying to gain 7 electrons to complete the current valence shell.
is helium is lightest monatomic element chemical properties
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Helium is the second lightest element and the lightest monatomic element in its natural state. It is part of the noble gases, inert and does not react with other elements, and has various applications due to its low density.
Helium is a colorless, odorless, and tasteless element that is found naturally in the gas state. It is known for being the second most abundant element in the universe and the lightest monatomic element. A helium atom consists of a nucleus with 2 protons and usually 2 neutrons and is enveloped by 2 electrons, resulting in a complete valence shell making it chemically inert. Helium has an atomic number of 2, making it the second element in the periodic table right after hydrogen, which is the first and simplest element having only one proton and one electron and generally forms H₂ molecules. Contrary to helium, hydrogen is the lightest gas overall since it forms diatomic molecules. Nonetheless, if we consider single atoms, then helium atoms are indeed heavier than hydrogen atoms.
Helium's unique characteristics such as its low boiling point, low density, and lack of chemical reactivity arise from its filled electron shell, where no further electrons can be added. These properties make helium a noble gas and it is placed at the top of this group in the periodic table. Its low density of only 0.164 g/L at 25°C and 1 atm pressure also makes helium ideal for applications such as filling balloons.
PLZZ HELP ME I'M STUCK!!!!!! 90pts I'M DESPERATE!!!!!!!!!!!
Describe what would happen to both air temperature and soil temperature if cold weather were to pass through the area.
What can you learn about soil and air from looking at your graphs and your answers above?
What does the data mean for people involved in farming and agriculture?
Answers
The map on the next page shows a hypothetical continent on Earth. Assume that biomes and climates on this continent are produced by the same factors that produce biomes and climates on Earth’s real continents. Use this map to answer the questions in this activity. Where needed, draw the required features directly on the map.
1. On the map of the hypothetical continent, indicate the location(s) of these types of biomes: Use the information in Figures 50.10, 50.18, and 50.19 of Biology, 7th edition, to answer these questions.
a. Tropical rainforest(s)In general, tropical rainforests lie between the equator and about 25° north and south latitudes, where the annual mean precipitation exceeds 150 cm and the annual mean temperature exceeds about 23°C.
b. Temperate coastal desert(s)Temperate coastal deserts tend to lie between 25° and 45° north and south latitudes, where the general direction of the trade winds is away from the coast and the annual mean precipitation is less than 40 cm.
c. Temperate deciduous forest(s)Temperate deciduous forests tend to lie between 30° and 60° north and south latitudes, where the annual mean precipitation exceeds 102 cm and the annual mean temperature exceeds about 11°C.
To do this, draw approximate boundary lines to delimit each biome type, and then label each delimited area with the type of biome it contains.
2. Atmospheric circulation is driven primarily by differential heating of Earth’s surface. More heat is delivered near the equator than near the poles. This seems to explain the northward and southward flows of air. What introduces the eastward and westward components into air movement? (Hint: Review Figure 50.10, Global Air Circulation and Precipitation Patterns and Global Wind Patterns, and its associated text in Biology, 7th edition.)As indicated in Figure 50.10, “as Earth rotates on its axis, land near the equator moves faster than that at the poles, deflecting the winds from the vertical paths” introduced by differential heating. This deflection creates more easterly flow patterns between the equator and 30° north and south latitudes and more westerly flow patterns between 30° and 60° north and south latitudes.
A hypothetical continent3. Use your understanding of global air circulation and wind patterns to draw arrows on the map of the hypothetical continent indicating:
a. The direction of prevailing winds at points W1, W2, and W3b. The direction of flow of surface currents in the ocean at points O1, O2, and O3
(Hint: Note on the map in Figure 50.10 that surface currents in the ocean follow the major wind systems at the surface.)
4. Are the surface winds at the given points warming or cooling as they move? Explain.
Point on the mapAre the winds warming or cooling as they move?
Explanationa. X1
The winds are warming.The general wind pattern in this area is from the south west (westerlies). These winds tend to pick up moisture as they move from 30° to 60° N latitude.b. X2
The winds in this region tend to be cooling. This region tends to be under the influence of the cooling easterly winds. These winds tend to pick up moisture as they flow from 30° to 0° N latitude.c. X3
The winds are warming. The general wind pattern in this region is westerly. These winds tend to pick up moisture as they flow from 30° to 60° S latitude.
5. What biomes or vegetation types would most likely be found at the given points? (Assume all are at sea level or low altitudes.)
Point on the mapMost likely type of biome or vegetation
A
This region would most likely contain coniferous forest
B
This region would most likely be a temperate grassland which will graduate into temperate deciduous forest as it moves east.
C
This could be a region of chapparal which would graduate into tropical forest as one moves south
D
This is most likely a region of tropical rainforest.
I have the same assignment rn witht he graph but i only have 4 points plotted and connected by lines am i doing it wrong plzzz???
The air temperature would drop quickly compared to the soil because the difference between solid and gas. But the ground will stay cooler longer than the air because it contains it better than the air.
Does water boil at the same temperature everywhere
Answers
Answer:
No, Water boils faster at higher altitudes.
Explanation:
In 1912, chemist Fritz Haber developed a process that combined nitrogen from the air with hydrogen at high temperatures and pressures to make ammonia. Specifically, the process involved combining one molecule of nitrogen gas (N2) with three molecules of hydrogen gas (H2) to get two molecules of ammonia (NH3). If you write this process in a symbol format, it looks like this:
N2 + 3H2 → 2NH3
I wanted to ask about the number of atoms that are involved. I got an answer of 8 atoms before and after, but I wasn't completely sure.
Answers
what tools can scientists use to measure the volume of liquid
Answers
Which of the following is not a base
A. KOH
B. NH3
C. NaOH
D. H3C6H5O7
Answers
In essence, the question is asking which of the options is an acid or a neutral compound; thus not a base. A base is a compound that accepts free hydrogen ions while in aqueous solution and as such they usually lack hydrogen ions that can be released in solution. If you ionize all the compounds/molecules above, the only on that has free hydrogen ions is OPTION D (which is an organic acid and not a base).
Weight measures
A. How dense an object is.
B. How large an object is.
C. The amount of mass in an object.
D. The effect of gravity on an object.
Answers
Answer: D) The effect of gravity on an object
Explanation: We're not talking about mass, we're talking about weight. Weight is measured by the force of gravity on a object. For examples, you might be 100 pounds on Earth but 12 pounds on the moon.
Which of the subatomic particles is responsible for the chemical behavior of a given atom?
Answers
Are Si valence electrons shared?
Are C valence electrons shared?
Answers
Answer:
4
Explanation:
Si has atomic number 14 so the electronic configuration 2,8,4
Valence electrons of Si and C are shared in covalent bonding.
Explanation:In a covalent bond, valence electrons are shared between atoms. The number of valence electrons an element has determines how many covalent bonds it can form. For example, carbon (C) has 4 valence electrons, so in a covalent bond, these 4 electrons are shared with other atoms.
Similarly, silicon (Si) also forms covalent bonds by sharing its valence electrons. Silicon has 4 valence electrons like carbon, so it can form 4 covalent bonds as well.
total kinetic energy of all the atoms that make up a sample of matter, would that be heat or mechanical????
Answers
Basically temperature is a measurement of atomic movement (doesn't move object as a whole).
Hence heat.
Answer:
Mechanical energy
Explanation:
Mechanical energy is a result of kinetic energy plus potential energy of an atom due to the motion of electrons. As the electrons move away from the nucleus, that is to the outer orbitals the potential energy increases, and as the electrons move inward towards the nucleus the kinetic energy increases.
Cladistics is a way to separate animals into new species. t or f
Answers
The isotope 65 29cu2+ has how many electrons and how many protons?
Answers
Which type of change occurs when the electrons of two atoms interact to form an atomic bond?
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Using the periodic table, determine which material is most likely to be a good insulator. magnesium silver aluminum sulfur
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Answer:
sulfur
Explanation:
If the average salinity of seawater is 35ppt, how many grams of dissolved salts will 500g of seawater contain?
Answers
Given an average seawater salinity of 35ppt (parts per thousand), the amount of dissolved salts in 500g of seawater is calculated to be 17.5g.
Explanation:The average salinity of seawater is given as 35ppt, which stands for parts per thousand. This means that for every 1000g of seawater, there are 35g of dissolved salts. Therefore, to find out how many grams of dissolved salts are in 500g of seawater, we need to set up a proportion.
Start by writing the given proportion: 1,000g seawater / 35g salt = 500g seawater / X g salt. Solving for X gives us the equivalent grams of salt in 500g water. X is calculated by cross-multiplying 35g by 500g and dividing the result by 1,000g. The calculation should look like this: (35g * 500g) / 1,000g = 17.5g.
So, 500g of seawater contains 17.5g of dissolved salts.
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This is a model of a lithium atom. How likely is it that this atom would want to bond with another atom to fill it's outer shell?
Answers
Hope this helps
A:This atom is very likely to bond with another atom.
B:This atom is only slightly likely to bond with another atom
C:This atom is not likely at all to bond with another atom.
And I Think The Answer Is A
Describe matter, and explain why is light is not classified as matter?
Answers
What is the percentage error for a mass measurement of 17.7g, given that the correct value is 21.2g?
Answers
The percentage error for the mass measurement is 16.5%.
Explanation:To calculate the percentage error, we use the formula:
Percentage Error = (|Measured Value - Actual Value| / Actual Value) x 100%
In this case, the measured value is 17.7g and the actual value is 21.2g. Plugging in these values into the formula, we get:
Percentage Error = (|17.7g - 21.2g| / 21.2g) x 100% = |3.5g| / 21.2g x 100%
Since the absolute value of 3.5 is equal to 3.5, the percentage error is:
Percentage Error = (3.5g / 21.2g) x 100% = 16.5%
Grapefruit juice is approximately ph 3, and tomato juice is approximately ph 4. a glass of grapefruit juice contains _____ h+ as a glass of tomato juice.
Answers
A glass of grapefruit juice contains ten times more H+ than a glass of tomato juice.
How many H+ ions are in a specific pH?The pH of any solution is determined with the help of hydrogen ion concentration. For example, if a neutral solution has a pH of 7, it means that the concentration of H+ ions is [tex]10^-^7[/tex]. In other words, it may contain 0.0000001 mol of hydrogen ions in a solution of 1 liter.
According to the question,
The pH of Grapefruit juice is = 3
The concentration of H+ ions = [tex]10^-^3[/tex] = 0.001 mol.
The pH of Tomato juice = 4.
The concentration of H+ ions = [tex]10^-^4[/tex] = 0.0001 mol.
From the above concentration of both hydrogen ion concentrations, it is clearly illustrated that a glass of grapefruit juice contains ten times more H+ than a glass of tomato juice.
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According to dalton's atomic theory, when elements react, their atoms combine in
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Final answer:
According to Dalton's atomic theory, when elements react, their atoms combine in simple whole number ratios to form chemical compounds. In chemical reactions, atoms can be combined, separated, or rearranged, but they are neither created nor destroyed.
Explanation:
According to Dalton's atomic theory, when elements react, their atoms combine in simple whole number ratios to form chemical compounds. In chemical reactions, atoms can be combined, separated, or rearranged, but they are neither created nor destroyed. This means that the number of atoms in the reactants is equal to the number of atoms in the products.
Carl had four metal blocks.. Each block was a different type of metal, but it had the same size and volume. All four blocks were weighed on a balance and their masses recorded in the table below. Which one of these metals is the least dense?
Block 1: 65 grams
Block 2: 32 grams
Block 3: 100 grams
Block 4: 79 grams
options:
Block 1
Block 2
Block 3
Block 4
Answers
Answer is: Block 2 is the least dense.
d(metal) = m(metal) ÷ V(metal).
Volume is the same for all metals, so density only depends on mass of the block of the metal.
Smaller the mass of the block, smaller is the density:
d(block 1) = m(block 1) ÷ V.
d(block 1) = 65 g/V.
d(block 2) = 32 g/V.
d(block 3) = 100 g/V.
d(block 4) = 79 g/V.
When gold is melted and formed in a mold to make a piece of jewelry, what type of change is taking place?
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Should be the answer;)
Physical Change
Which change can be easily be reversed? question 23 options: both a physical and chemical change chemical change physical change neither a physical or chemical change?
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Answer:
Physical change
Explanation:
A physical change is a reversible change in the physical properties of a substance.
Let’s look at an example:
Water. Water is made up of 2 hydrogen atoms and one oxygen atoms, H2O.
When the temperature of water decreases, the particles slow down and the liquid turns to ice. When it turns to ice, is it still H2O? Yes! When water changes states, it’s just a physical change. The chemical properties of water DO NOT change!! It’s physical change because when you melt ice, it can goes back to its original form: liquid (water). It can be reversed!
I really hope it helped! If so, please mark brainliest! Thanks! Have a great day! :)
Here are some examples of ways to cause physical changes:
The change that can be easily reversed is a physical change, because it doesn't alter a substance's basic identity - it just changes its form. This is unlike chemical changes, which fundamentally alter a substance and thus cannot be easily reversed.
Explanation:The change that can be easily reversed is a physical change. This is because physical changes don't alter the basic identity of the substance - they just change its form. For example, when you melt ice into water, that's a physical change because the water is still H2O, just in a different state. If you put it back in the freezer, it can change back into ice. This is unlike a chemical change, such as burning wood into ash and smoke. In this case, the wood can't be changed back into its original form because its chemical properties have been altered.
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What is the classification for this polynomial 3g^2?
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If a sulfur ion with 16 protons and 17 electrons loses one electron, what is the resulting charge?
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When a sulfur ion with 16 protons and 17 electrons loses one electron, the resulting charge is 0. This is because the number of protons equals the number of electrons, resulting in no overall charge.
Explanation:The question here asks: If a sulfur ion has 16 protons and 17 electrons and this ion loses one electron, what is the resulting charge? In order to answer this, it's important to understand that the charge of an ion is determined by the difference between the number of protons and the number of electrons. Initially, the sulfur ion had one more electron than protons, giving it a charge of -1.
However, when it loses an electron, the number of protons and electrons equal each other, resulting in a neutral ion with a charge of 0. Therefore, when a sulfur ion with 16 protons and 17 electrons loses one electron, the resulting charge is 0. This is because the number of negatively charged electrons now equals the number of positively charged protons, resulting in no overall charge.
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