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Tasya [4]
4 years ago
8

HELP ME OMG WHY IS NOBODY HELPING ME SJCNEOVKRM

Chemistry
1 answer:
Sholpan [36]4 years ago
3 0

I believe it would be CS and GE (option 3). i hope i helped ya out.

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A gas occupies 0.67 L at 350 K. What temperature is required to reduce<br> the volume to 0.21 L *
hammer [34]

Answer:

109.7K

Explanation:

Using Charles law equation as follows;

V1/T1 = V2/T2

Where;

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question;

V1 = 0.67L

V2 = 0.21L

T1 = 350K

T2 = ?

Using the formula above;

0.67/350 = 0.21/T2

0.001914 = 0.21/T2

0.001914T2 = 0.21

T2 = 0.21/0.001914

T2 = 109.7K

7 0
3 years ago
What is the protein that helps us identify the blood type
Gekata [30.6K]

Answer:

Antigens (more info below)

Explanation:

Antigens determine the blood type and may be either proteins or sugar molecule complexes (polysaccharides). Genes in the blood group antigen group provide instructions for the production of antigen proteins. Blood group antigen proteins serve a variety of functions within the red blood cell membrane.

hope I helped!

7 0
3 years ago
Which of the following is an example of CHEMICAL weathering? (select all
larisa86 [58]
Rust on a rock that contains iron
Mineral absorbs water and changes into a new substance
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A chemical engineer has determined by measurements that there are 69.0 moles of hydrogen in a sample of methyl tert-butyl ether.
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<span>5.75 moles The formula for methyl tert-butyl ether is (CH3)3COCH3, so a single molecule has 5 carbon, 12 hydrogen, and 1 oxygen atoms. So for every 12 moles of hydrogen, there's 1 mole of oxygen. So simply divide the number of moles of hydrogen by 12 to get the number of moles of oxygen. 69.0 / 12 = 5.75 Therefore there's 5.75 moles of oxygen in the sample.</span>
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The atoms will form intermolecular bonds and solidify
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