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Temka [501]
3 years ago
7

Can someone help please

Chemistry
2 answers:
enyata [817]3 years ago
8 0

Answer:

d. cells are made of atoms and molecules. :)

Explanation:

hope i helped

Scrat [10]3 years ago
3 0
4th. Cells are made of atoms and molecules
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type of environmental factors such as temperature or amount of light that might affect an organism's phenotype is___________​
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The answer to the question is environmental factors
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2 years ago
Which of the following represents the mass of 1 molecule of SH2?
mr_godi [17]
Answer:
            5.645 × 10⁻²³ g

Solution:

Step 1) Calculate Molar Mass of SH₂;

Atomic Mass of Sulfur    =  32 g/mol

Atomic Mass of H₂         =  2 g/mol
                                      --------------------
Molecular Mass of SH₂  =  34 g/mol

Step 2: Calculate mass of one molecule of SH₂ as;

As,

                     Moles  =  # of Molecules / 6.022 × 10²³

Also, Moles  =  Mass / M.Mass So,

                     Mass/M.mass  =  # of Molecules / 6.022 × 10²³

Solving for Mass,

                     Mass  = # of Molecules × M.mass / 6.022 × 10²³

Putting values,

                     Mass  =  (1 Molecule × 34 g.mol⁻¹) ÷ 6.022 × 10²³

                     Mass  =  5.645 × 10⁻²³ g
5 0
3 years ago
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A car travels 350 km in 7 hours. What is the average speed of the car (in km/hr)?
Blababa [14]

Answer:

50 km/hr

Explanation:

just divide the distance by the time (350/7)

7 0
3 years ago
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How many moles of calcium (Ca) atoms are there in 77.4 g of Ca?
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Lar mass of Ca<span> = 40.08 </span>grams/mole 77.4 g Ca<span> * ( 1 </span>mole Ca<span>/ 40.08 ... n = m / M 1mol </span>Ca<span>weights 40 gmol-1 n = 77,4 / 40 = 1.93 </span>mol<span>.</span>
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3 years ago
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The CO2 produced in one round of the citric acid cycle does not originate in the acetyl carbons that entered that round. If the
aleksley [76]

Answer:

It will require<u> second round</u> of the cycle to release 14C0_2

Explanation:

<u>Reason behind the requirement of second round of the cycle to release </u>CO_2 -:

The C4 carbon of succinyl CoA is acetyl from acetyl CoA. Succinyl CoA is converted to succinate, which is then converted to fumarate, fumarate, malate, and eventually oxaloacetate. 14C will be found in oxaloacetate at either C1 or C4. During the second round of the loop, each of these carbons will be converted to carbon dioxide.

7 0
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