Based on your observations in the virtual lab, complete the data table.
Question 3 options:
separated using a filter; mass
separated using a magnet; magnetism
separated using a filter; density
separated using a filter; not soluble in water
Sand was separated from the mixture using a filter because it is not soluble in water, making it a suitable method for separating insoluble solids from liquids.
Based on the provided information, let's analyze how the mixture of sand was separated and which physical property was used for the separation:
Mixture: Sand
How did you separate it?
Separated using a filter; not soluble in water.
Which physical property did you use to separate it?
The physical property used to separate sand from the mixture was "not soluble in water."
Here's the explanation:
Separated using a filter: This separation method suggests that sand was separated from the mixture by passing the mixture through a filter. The filter allows the liquid components of the mixture (if any) to pass through while retaining the solid sand particles.
Not soluble in water: This property indicates that sand doesn't dissolve in water. Since it doesn't dissolve, it remains as solid particles when mixed with water, allowing it to be separated by filtration.
So, the method used to separate the sand from the mixture was filtration, and the physical property applied was that sand is not soluble in water. This combination of properties makes it possible to separate sand from the mixture efficiently.
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What is the purpose of the uninoculated control tubes used in the oxidation fermentation test?
A mixture that results when substances dissolve to form a homogeneous mixture
What compound is composed of 3 fatty acids and glycerol?
A Triglyceride is the compound composed of three fatty acids and glycerol, and serves as the main form of fat storage in the bodies of humans and other animals.
Explanation:The compound composed of three fatty acids and glycerol is known as a Triglyceride. Triglyceride is the main form of fat stored in the bodies of humans and other animals. During digestion, the body breaks down fats into fatty acids and glycerol, which can then be absorbed into the bloodstream. The body can use these components to produce energy or to reassemble them into triglycerides for storage and later use.
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Elements are arranged in the periodic table based on their _____. mass number atomic number atomic mass percent abundance
Answer: atomic number
Explanation:
A nitrogen oxide is 63.65% by mass nitrogen. the molecular formula could be ________.
Answer:
[tex]N_{2}O[/tex]
Explanation:
1. First suppose that the mass of the compound is 100g, so:
mass of N + mass of O = 100g
2. Multiply the percentages of N and O by the total mass of the compound:
For the N:
[tex]63.65*100g=63.65g[/tex] of N
For the O:
[tex]100-63.65=36.35g[/tex] of O
3. Divide the mass of each atom between the molar mass:
For the N:
[tex]\frac{63.65g}{14g}=4.54[/tex]
For the O:
[tex]\frac{36.35g}{16g}=2.27[/tex]
4. Divide each value by the smallest:
For the N:
[tex]\frac{4.54}{2.27}=2[/tex]
For the O:
[tex]\frac{2.27}{2.27}=1[/tex]
5. Write each atom with its number to obtain the molecular formula:
[tex]N_{2}O[/tex]
What element makes protein different from carbohydrate and fat? select one:
a. hydrogen
b. oxygen
c. carbon
d. nitrogen?
Nitrogen element makes protein different from carbohydrate and fat
d. nitrogen
What are the constituents of protein, carbohydrates and fatsProteins differ from carbohydrates and fats in that they contain the element nitrogen. While carbohydrates and fats are composed of carbon, hydrogen, and oxygen, proteins also contain nitrogen in addition to these elements.
Nitrogen is an essential component of amino acids, which are the building blocks of proteins. This nitrogen-containing structure allows proteins to have unique properties and functions that are distinct from carbohydrates and fats.
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Fill in the coefficients that will balance the following reaction:
_____Hg(CO3)2+______AgCl---> ______HgCl4+______Ag2CO3
during which step of the scientific method does a scientist determine whether the hypothesis was supported?
1- design an experiment
2- collect date
3- perform the experiment
4- draw conclusion
which property is a measure of the average kinetic energy of the particles in the sample of matter
The type of bond that forms between two atoms when electrons are shared is a(n) _______________ bond.
in some places there are deep cracks in earths crust called
WILL MARK AS BRAINLIEST
Name the following ionic compounds.
When liquid water is heated to 100° c, it boils and becomes water vapor. when the vapor is cooled below 100° c, it turns back into a liquid. what is the correct name for the process in which the vapor turns back into a liquid?
A laboratory technician needs to make a 108 -liter batch of a 20 % acid solution. how can the laboratory technician combine a batch of an acid solution that is pure acid with another that is 10 % to get the desired concentration?
Which of these best describes the bonding between oxygen and hydrogen in the water molecule?
How to measure mass of unknown metal using only graduated cylinder, dropper, dish, ruler funnel, and scoopula?
Final answer:
To measure the mass of an unknown metal using only a graduated cylinder, dropper, dish, ruler, funnel, and scoopula, you can use the displacement method.
Explanation:
To measure the mass of an unknown metal using only a graduated cylinder, dropper, dish, ruler, funnel, and scoopula, you can use the displacement method. Here are the steps:
Weigh the empty dish using a balance.
Fill the graduated cylinder with water up to a certain level and record the initial volume.
Carefully lower the metal into the graduated cylinder using the dropper, making sure it is fully immersed in water.
Measure the new volume of the water and metal in the graduated cylinder.
Calculate the volume of the metal by subtracting the initial volume from the final volume.
Determine the density of the metal by dividing its mass (obtained from the weighed dish) by its volume.
The mass of the unknown metal can then be obtained by multiplying its density by its volume.
The photoelectric effect is the basis for how solar energy panels work today.
Select one:
True
False
Final answer:
The photoelectric effect is indeed fundamental to how solar energy panels operate by using the energy of sunlight to eject electrons in a photovoltaic cell, creating electrical current that can be used as power. True
Explanation:
The photoelectric effect is indeed the basis for how solar energy panels, also known as photovoltaic cells, work today. When photons from sunlight strike the surface of a solar cell, they may have sufficient energy to eject electrons from the material of the cell, typically a semiconductor like silicon. This creates free electrons and corresponding holes. If there is an electrical circuit connected, these free electrons will flow through the circuit, thereby generating an electric current. This electric current can then be harnessed and used to power electrical devices or feed into the electrical grid.
It's important to note that the exact mechanism in solar cells is a bit different from the classic photoelectric effect observed in metals because semiconductors have a band gap that must be overcome by the incoming photons. This process is often referred to as the photovoltaic effect, which is closely related to the photoelectric effect as described by Albert Einstein.
Researchers have discovered that a moon rock brought back by the Apollo astronauts has a mass of 5.671 kg and a volume of 1,698 cm3. What is the density of the rock? Remember to use the correct number of significant digits in your answer. 3.3398 g/cm3 3.340 g/cm3 0.2994 g/cm3 3.3398 x 10-3 g/cm3
Answer:The density of the moon rock is [tex]3.3398 g/cm^3[/tex].
Explanation:
Mass of the moon rock = 5.761 kg = 5671 g
(1 kg = 1000 g)
Volume of the moon rock = [tex]1,698 cm^3[/tex]
[tex]Density=\frac{Mass}{Volume}=\frac{5761 g}{1,698 cm^3}=3.3398 g/cm^3[/tex]
The density of the moon rock is [tex]3.3398 g/cm^3[/tex].
how does a ribosomes structure relate to its function
Ribosomes are cellular structures that facilitate protein synthesis by linking amino acids to form a protein. They are composed mainly of rRNA and proteins, with the rRNA playing a crucial role in the alignment during synthesis and catalysis of peptide bond formation. The abundance of ribosomes in certain cells like pancreatic cells indicates their significant role in high-rate protein production.
Ribosomes are essential cellular structures that are responsible for protein synthesis. The term synthesis indicates the process of combining various amino acids to produce a complete protein. These ribosomes link amino acids in a specific sequence, forming a polypeptide chain that will fold into a functional 3-dimensional protein structure. The size and shape of a protein determine its function, highlighting the direct relationship between structure and function in ribosomal activity.
Composed mainly of ribosomal RNA (rRNA) and protein, ribosomes have subunits that work together during protein synthesis. The rRNA plays a critical role in ensuring the proper alignment of the messenger RNA (mRNA), transfer RNA (tRNA), and the ribosome itself during this process. Additionally, the rRNA possesses enzymatic activity and catalyzes the formation of peptide bonds, which are essential in linking amino acids.
Ribosomes are abundantly found in cells that produce substantial amounts of proteins, such as pancreatic cells. Since these cells are responsible for creating digestive enzymes, numerous ribosomes are required to meet the high demand for protein synthesis. This abundance exemplifies the concept that the form, or structure, of a cell or cellular component reflects its function.
The structure of ribosomes, which consists of ribosomal RNA (rRNA) and proteins, allows them to efficiently synthesize proteins by facilitating the translation of messenger RNA (mRNA) into polypeptides.
Composition and Structure:
Ribosomes are composed of two subunits: a larger subunit and a smaller subunit. These subunits are made up of ribosomal RNA (rRNA) and proteins. The large subunit typically contains enzymatic activity essential for forming peptide bonds, while the small subunit is responsible for reading the sequence of mRNA.
Binding Sites:
Ribosomes have three critical binding sites: the A (aminoacyl) site, the P (peptidyl) site, and the E (exit) site. This specific arrangement allows for the sequential addition of amino acids to the growing polypeptide chain. The A site holds the incoming aminoacyl-tRNA, the P site holds the tRNA attached to the growing polypeptide chain, and the E site is where the empty tRNA exits.
Translation Process:
During translation, ribosomes move along the mRNA strand, facilitating the pairing of tRNA anticodons with the corresponding mRNA codons. This ensures that the correct amino acids are incorporated in the proper sequence to form proteins.
Efficiency and Functionality:
The ribosomal structure allows for high efficiency in protein synthesis. The close proximity of the A and P sites enables rapid transfer of the growing polypeptide chain from one tRNA to another, speeding up the translation process.
Magnesium reacts with hydrochloric acid, hcl, to produce hydrogen gas (hint: a diatomic molecule)and magnesium chloride. write a balanced equation for this reaction.
Two moles of lithium has a mass of 13.88g. true or false
Which solution contains the largest number of moles of chloride ions?
a.30.00 ml of 0.100m cacl2
b.10.0 ml of 0.500m bacl2
c.25.00 ml of 0.400m kcl
d.4.00 ml of 1.000m nacl
e.7.50 ml of 0.500m fecl3?
The solution which contains the largest number of moles of Chlorine ions is Choice D: 7.50 ml of 0.500m fecl3.
Definition:
The molarity of a solution is simply the ratio of the number of moles of the solute to the liters of solution.
Molarity, M = number of moles of solute, (n) /liters of solution.Number of moles of solute, n = molarity x liters of solution.For Choice (a):
30.00 ml of 0.100m Cacl2No. of moles of CaCl2 = 0.1 x 0.03 = 3x10-³ molesSince, 1 mole of CaCl2 contains 2 moles of chlorine, therefore 3x10^-3 moles of CaCl2 contains 6x10^-3 moles of chlorineFor Choice (b):
10.0 ml of 0.500m BaCl2No. of moles of BaCl2 = 0.5 x 0.01 = 5x10-³ molesSince, 1 mole of BaCl2 contains 2 moles of chlorine, therefore 5x10-³ moles of BaCl2 contains 10x10-³ moles of chlorineFor Choice (c):
25.00ml of 0.400m KClNo. of moles of KCl = 1 x 0.004 = 0.004 molesSince, 1 mole of KCl contains 1 mole of chlorine, therefore 4x10-³ moles of KCl contains 4x10-³ moles of chlorine.For Choice (d):
4.00 ml of 1.000m NaClNo. of moles of NaCl = 1 x 0.004 = 0.004 moles1 mole of NaCl contains 1 mole of chlorine, therefore 4x10-³ moles of NaCl contains 4x10-³ moles of chlorine.For Choice (e):
7.50 ml of 0.500m fecl3No. of moles of FeCl3 = 0.5 x 0.0075 = 3.75x10-³ molesSince, 1 mole of FeCl3 contains 3 moles of chlorine, therefore 3.75x10-³ moles of FeCl3 contains 0.01125 moles of chlorineUltimately, The solution which contains the largest number of moles of Chlorine ions is Choice D: 7.50 ml of 0.500m FeCl3.
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Which feature do gas giants have that terrestrial planets do not?
a. volcanoes
b. rings
c. rift valleys
d. mountains
Group 7 on the periodic table are called halides. if you decided to do a taste test on all of those elements, what would they probably taste like
The pks for the ionizable groups in the amino acid lysine are pk1 = 2.18, pk2 = 8.95, and pk3 = 10.53. what would be the net charge on lysine at ph = 7.0
All of the atoms of argon have the same
what is the wavelength of a 4.89 Hz wave
The wavelength of a wave can be calculated by using the formula λ = v/f, where v is the wave's speed and f is its frequency. Without knowing the type of wave or its speed, we cannot find the specific wavelength for a wave with a frequency of 4.89 Hz. If it's a sound wave in air, the wavelength would be approximately 70.14 m.
Explanation:To calculate the wavelength of a wave with a given frequency, we use the formula for wave speed: v = fλ, where v is the speed of the wave, f is the frequency, and λ(lambda) is the wavelength. Typically, the speed of a sound wave in air is about 343 m/s. However, the question does not specify the type of wave or its speed, so we cannot make this assumption without more information. In general, with the speed of the wave and its frequency, we could re-arrange the formula to find the wavelength: λ = v/f.
Therefore, if the type of wave and its speed were known, you could substitute the given frequency and the known speed into the formula to find the wavelength. For instance, if you know that you're working with a sound wave travelling through air at room temperature (v approximately equal to 343 m/s), you could calculate the wavelength as follows: λ = v/f = 343 m/s / 4.89 Hz = approximately 70.14 m.
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Atoms on the left side of the periodic table tend to form positive ions because
What happens to the atomic radius when an electron is lost
Answer : When an electron is lost then the atomic radius is, decreases.
Explanation :
Atomic radius of an atom is defined as the total distance from the nucleus to the valence shell of the atom.
As moving from left to right in a period, more electrons are added in the same shell and the attraction between the last electron and nucleus increases, which results in the shrinkage of size of an atom.
Thus, atomic radii from the left to right across a period tend to decrease.
As moving from top to bottom in a group, there is an addition of shell around the nucleus and the outermost shell gets far away from the nucleus and hence, the distance between the nucleus and outermost shell increases.
Thus, atomic radii from the top to bottom in a group tend to increases.
When atom loses an electron then it becomes positively charged and the atomic radius of positively charged ion is lower than neutral atom.
When atom gains an electron then it becomes negatively charged and the atomic radius of negatively charged ion is more than neutral atom.
Hence, when an electron is lost then the atomic radius is, decreases.