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Vinvika [58]
2 years ago
14

What is the mass number of the atom shown? a. 11 b. 18 d. 20 C. 19

Chemistry
2 answers:
PolarNik [594]2 years ago
6 0

Answer:

Explanation:it is 11

Anastasy [175]2 years ago
6 0
It is 20 because the mass is proton + neutron!!! hope this helped :)
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Write the overall equation for the conversion of pyruvate to acetyl coa. express your answer as a chemical equation.
Schach [20]
 the overall  equation  for the conversation of pyruvate  to  acetyl COA  is as below

CH3COO-COO-  + NAD+  + HS-COA = ch3-COO-S -COA +NADH +CO2

The oxidation of pyruvate led to a conversation  of NAD+  to NADH and  produces acetyl COA  and CO2
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3 years ago
PLEASE HELP URGENT!!!! ( photo included)
Aliun [14]
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5 0
3 years ago
Convert 4.5 X 1022 molecules of H2O to moles.
noname [10]

Answer:

<h3>The answer is 0.075 moles</h3>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L}  \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{4.5 \times  {10}^{22} }{6.02 \times  {10}^{23} }  \\  = 0.074750830...

We have the final answer as

<h3>0.075 moles</h3>

Hope this helps you

3 0
2 years ago
Solve for y in the following problem: 5.3 x 10- (y)(2y)
weqwewe [10]

Answer:

The value of y = 5.1478

Explanation:

The linear equation is an equation obtained when a linear polynomial is equated to zero. When the solution obtained on solving the equation is substituted in the equation in place of the unknown, the equation gets satisfied.

The given equation: 5.3 x 10- (y)(2y) = 0

⇒ 53 - 2y² = 0

⇒ 2y² = 53

⇒ y² = 53 ÷ 2 = 26.5

⇒ y = √26.5 = 5.1478

8 0
3 years ago
Which of the following statements is true?
Wittaler [7]

Answer:

Metals lose electrons to become cations.

Explanation:

For example, sodium loses an electron to become a sodium cation.

Na· ⟶ Na⁺ + e⁻

A is <em>wrong</em>. Nonmetals gain electrons to become anions.

B is <em>wrong</em>. Metals lose electrons.

D is <em>wrong</em>. Nonmetals gain electrons to become anions.

8 0
3 years ago
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