CHEMISTRY HIGH SCHOOL

Scientists have: (Select all that apply.) a. observed amino acids forming spontaneously
b. demonstrated how amino acids can form from the environment
c. confirmed that the ultimate source of amino acids and proteins is from plants
d. not yet determined the source of amino acids

Answers

Answer 1
Answer: Scientists have: (Select all that apply.) 
a. observed amino acids forming spontaneously 
b. demonstrated how amino acids can form from the environment 
c. confirmed that the ultimate source of amino acids and proteins is from plants
d. not yet determined the source of amino acids

The correct answers are:

Demonstrated how amino acids can form from the environment
Confirmed that the ultimate source of amino acids and proteins is from plants
Answer 2
Answer: Demonstrated how amino acids can form from the environment and confirmed that the ultimate source of amino acids and proteins is from plants. Hope that was helpful!

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Desvribe all lab equipment that can be used to accurately measure the volume of a liquid

Answers

The items you would use to measure the volume of a liquid are:

1.) Water
2.) Sink
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To find the atomic mass of a particular atom you need to knowa. the number of protons.
b. the number of neutrons.
c. the number of protons and neutrons.
d. simply what element the atom belongs to.

Answers

You just need the number of protons and number of neutrons as the mass of eelctrons is negligible

Answer:

C. the number of protons and neutrons

What is a chemical change

Answers

A chemical change Is any change that results in the formation of new chemical substances .


I hope that's help and have a great night !

Consider three gases: Ar, SF6, and Cl2. If 50.0 grams of these gases are placed in each of three identical containers, which container will have the highest pressure? The volume and temperature of all three containers are the same.

Answers

The ideal gas law:
pV=nRT \Rightarrow p=(nRT)/(V)
p - pressure, n - number of moles, R - the gas constant, T - temperature, V - volume

The volume and temperature of all three containers are the same, so the pressure depends on the number of moles. The greater the number of moles, the higher the pressure.
The mass of gases is 50 g.

Ar \nM \approx 39.948 \ (g)/(mol) \nn=(50 \ g)/(39.948 \ (g)/(mol)) \approx 1.25 \ mol \n \nSF_6 \nM \approx 146.06 \ (g)/(mol) \nn=(50 \ g)/(146.06 \ (g)/(mol)) \approx 0.34 \ mol \n \nCl_2 \nM=70.9 \ (g)/(mol) \nn=(50 \ g)/(70.9 \ (g)/(mol)) \approx 0.71 \ mol

The greatest number of moles is in the container with Ar, so there is the highest pressure.

For Gay-Lussac's law, temperature is measured in _____.

Answers

For Scientist Joseph Louis Gay-Lussac's law, temperature is measured on an absolute scale, specifically Kelvins or k. The formula may be expressed in P/T=k (P over T equals k). The answer to this question is 'kelvins'. I hope this helps. 

Atom X has a total of 52 elementary particles and a mass number of 35. X's atomic number is

Answers

Answer:

17

Explanation:

The number of elementary particles in the atom X = 52

The mass number of atom X = 35

The information required = The atomic number

The number elementary particles of the atom = The number of protons + The number of neutrons + The number of electrons

The mass number of an atom = The number of protons + The number of neutrons

∴ The number of electrons = The number elementary particles of the atom - The number elementary particles of the atom

The number of electrons = 52 - 35 = 17

In a neutral atom, the number of protons = The number of electrons = 17

The atomic number of atom, X = The number of protons in X = 17
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