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Dahasolnce [82]
2 years ago
7

What is the universe made of? Astronomers face an embarrassing conundrum: they don't know what 95% of the universe is made of.

Chemistry
1 answer:
Citrus2011 [14]2 years ago
4 0

Answer:

I think u understand this answers

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What kind of energy transformations occur when you hit a coconut with a hammer
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Answer: I dont really know

Explanation:

3 0
3 years ago
Use the Henderson-Hasselbalch equation and your knowledge of ionization to help you answer this question. Aspirin is a weak acid
Leya [2.2K]

Answer:

The protonated form is predominant when aspirin is absorbed more readily. The ratio of conjugate base to acid is 1 to 100.

Explanation:

Aspirin is more readily absorbed when it is protonated, that is when pH is lower than pKa (<em>more H⁺ available in the medium</em>). We can confirm this using Henderson-Hasselbalch equation for pH = 1.5:

pH = pKa +log(\frac{conjugate base}{weak acid} )\\1.5=3.5 +log(\frac{conjugate base}{weak acid} )\\-2.0=log(\frac{conjugate base}{weak acid} )\\10^{-2.0} =\frac{conjugate base}{weak acid}\\\frac{conjugate base}{weak acid}=0.01=\frac{1}{100}

When aspirin is absorbed more readily the ratio of conjugate base to acid is 1 to 100, being the acid the <em>predominant</em> form.

6 0
3 years ago
Why would 18 be wrong for the atomic mass of an atom with 6 neutrons, 6 electrons, 6 protons?
11Alexandr11 [23.1K]
Atomic mass is just protons plus neutrons
6 0
2 years ago
Vrite skeleton equations for the following word equations.
almond37 [142]

Answer:

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4 0
3 years ago
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Name the two products when calcium carbonate (CaCO3) is heated
trapecia [35]

Answer:

The products are Calcium oxide and Carbon dioxide.

Explanation:

When calcium carbonate is heated, thermal decomposition occurs.

Calcium calcium → Calcium oxide + Carbon dioxide

3 0
2 years ago
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