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Vlada [557]
3 years ago
13

Write an equation that represents the second ionization energy of nickel.

Chemistry
1 answer:
MariettaO [177]3 years ago
3 0
Ni+ (g) —> Ni 2+ (g) + e-
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Which amino acid(s) are metabolites in the urea cycle, but are not used as building blocks of proteins? A) Ornithine B) Citrilli
In-s [12.5K]

Answer:

D)

Explanation:

Ornithine and Citrulline are the amino acids which are metabolites in the urea cycle but not used as building blocks of proteins.

Ornithine is the most important reactant in urea cycle that is responsible for 80% of the excretion of nitrogen in the body. It even improves liver function.

Even Citrulline is not used in the building blocks of protein, Citrulline is mainly used to widen blood vessels and may play a role in muscle building.

3 0
3 years ago
What is a process used to separate homogeneous mixtures using physical changes​
navik [9.2K]

Answer:

Evaporation

Explanation:

with the help of evaporation , the liquid components are separated out from solid components easily .

6 0
3 years ago
What is the density of a substance that has a volume of 14 millimeters and a mass of 13.2 grams.
Contact [7]

Answer:

<h2>0.94 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{13.2}{14}  \\  = 0.94285...

We have the final answer as

<h3>0.94 g/mL</h3>

Hope this helps you

6 0
3 years ago
How many moles of iron in a sample that contains 7.91×10^23 atoms of iron?
vazorg [7]

Answer: 1.31

Explanation:  

No.of moles = given no.of atoms/Avagadro number

= 7.91×10^23 / 6.022 x 10^23

= 1.31

therefore, no.of moles = 1.31

Hope it helped u,

pls mark as the brainliest

^_^

5 0
3 years ago
How is 0.00069 written in scientific notation?
vfiekz [6]
6.9 x 10^-4 would be .00069 written in scientific notation
4 0
3 years ago
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