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bija089 [108]
3 years ago
14

Why are some amino acids described as essential amino acids?

Chemistry
2 answers:
SCORPION-xisa [38]3 years ago
6 0

Answer:

I would say A and D if you can pick two answers. if not then pick D

slavikrds [6]3 years ago
6 0

Answer:

D- They Cannot be made in the body

Explanation:

Just took the test on edge

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What element is CU?plz helpppp
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CU is the element symbol for Copper.
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4 years ago
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Solid aluminum oxide and hydrogen gas are heated, molten aluminum and water vapor form?
ruslelena [56]

Answer:

No

Explanation:

The answer would be no.

<em>Solid aluminium oxide cannot react with hydrogen gas to produce molten aluminium and water due to the fact that, on one hand, hydrogen as an element is not a strong enough reducing agent that can remove oxygen from the aluminium oxide.  On the other hand, aluminium is more reactive than hydrogen and hence, cannot be displaced by hydrogen in solution.</em>

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3 years ago
If a nitrogen atom has a -3 net charge, how many electrons does it have?
malfutka [58]

Answer:

If the nitrogen atom is a neutral atom, it will have seven electrons orbiting the nucleus of the atom. This is because neutral atoms get their neutral...

Explanation:

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3 years ago
Which compound would you expect to be soluble in the nonpolar solvent carbon disulfide?
ch4aika [34]

Answer:

hexane C6H14

IS YOUR ANSWER

Explanation:

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8 0
3 years ago
If a 45.6 g piece of aluminum has a density of 2.1 g/mL, what volume would it have?
Mashcka [7]

Answer:

\boxed {\tt 21.7142857 \ mL}

Explanation:

The density formula is:

d=\frac{m}{v}

Rearrange this formula for v, volume. Multiply by v, then divide by d.

d*v=\frac{m}{v}

d*v=m

\frac{d*v}{d} =\frac{m}{d}

v=\frac{m}{d}

Volume can be found by dividing the mass by the density. The mass of the aluminum is 45.6 grams and the density is 2.1 grams per milliliter.

v=\frac{45.6 \ g }{ 2.1 \ g/mL}

Divide. Note the grams, or g, will cancel out.

v=\frac{45.6 }{2.1 \ g}

v= 21.7142857 \ mL

The volume of the aluminum is 21.7142857 milliliters.

3 0
4 years ago
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