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enot [183]
4 years ago
14

Need help with these questions

Chemistry
1 answer:
lidiya [134]4 years ago
6 0

I believe the first answer is 0.621, and the second is Cu2O (i hope it’s correct)

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Which two formulas contain 4 atoms of hydrogen?
Rzqust [24]

Methane (CH4) = 1 carbon atom, 4 hydrogen

Sulphuric Acid (H2SO4) = 2 hydrogen atoms, 1 sulfur and 4 oxygen.

8 0
3 years ago
Why should motorist be careful when putting air in the motor car tyres​
Stolb23 [73]

Answer:

They might explode. I am serious.

4 0
3 years ago
Calcium propionate [Ca(CH₃CH₂COO)₂; calcium propanoate] is a mold inhibitor used in food, tobacco, and pharmaceuticals.(a) Use b
tekilochka [14]

We anticipate that the resulting aqueous solution will be basic.

<h3>What is the definition of a weak acid?</h3>

Weak acids are those that do not dissociate completely in solution. A weak acid is defined as any acid that is not a strong acid. A weak acid's strength is determined by how much it dissociates; the more it dissociates, the stronger the acid.

<h3>What exactly is a conjugate base?</h3>

A conjugate base is the base member, X-, of two compounds that transform into one another by gaining or losing a proton. In a chemical reaction, the conjugate base has the ability to gain or absorb a proton.

<h3>According to the given information:</h3>

Calcium propionate [Ca(CH₃CH₂COO)₂

We know that Calcium propionate dissolves completely in water.

So,

Ca(CH_3CH_2+COO)_2→Ca^2^+ +2CH_{3}CH_2COO−

Water can protonate the propionate anion. When everything is balanced,

CH_3CH_2\\COO−+H2O⇌CH_3CH_2COOH+OH−

We anticipate that the resulting aqueous solution will be basic.

To know more about Weak Acids and Conjugate Bases visit:

brainly.com/question/4483911

#SPJ4

4 0
1 year ago
Give some tips on how to take care of your microscope.
Ksenya-84 [330]

Answer:

dont get it wet or it wont work at all

8 0
3 years ago
Read 2 more answers
When metal atoms combine chemically with atoms of other elements, what do they usually do?
Fiesta28 [93]

Answer:

Maybe I know too much chemistry but how the metals (and the non-metals) react depends on where they are in the Periodic Table. The metals in groups I and II over on the far left side are explosively reactive and loose electrons and form ionic bonds. Examples: Na+1 has lost 1 electron and Li+2 has lost 2 electrons. The metals in the higher groups are more confusing but most of them share outer shell electrons and form covalent bonds. Examples: Fe2O3 (rust) where Iron shares 2X3 electrons with Oxygen which shares 3X2 electrons. Confused enough? :-)

The answer you'll be expected to give depends on the subject of the chapter you're studying. If you're studying covalent bonds, then the answer will probably be "form covalent bonds". If you're studying ionic bonds, then the answer will be "lose electrons".

Explanation:

This may not be the answer... I'm sorry if it's not

8 0
3 years ago
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