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myrzilka [38]
3 years ago
7

What is a potential benefit of fuel cell cars?

Chemistry
2 answers:
abruzzese [7]3 years ago
5 0

Answer:

b

Explanation:

77julia77 [94]3 years ago
3 0

Answer:

no recharging necessary

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Which of these is a carbohydrate?
Paladinen [302]

Answer:

C6H12O6

Glucose

Explanation:

Glucose is a monocarbohydrate

carbohydrates always have only C, H, and O

brainliest plz

6 0
2 years ago
Which of the following factors can be changed for a gas without changing the mass of the gas? Select all that apply.
viva [34]
It is either
volume or pressure
8 0
3 years ago
Read 2 more answers
Which best describes the transfer of heat energy through conduction? A. Heat energy is transferred from molecule to molecule by
TiliK225 [7]
It should be option (A) because conduction is the transfer of heat energy from one place to another by vibrations/motion of the molecules. I hoped I helped.
5 0
2 years ago
When producing a soluble salt in a reaction between an acid and an alkali, how can you prepare dry solid crystals from the solut
igor_vitrenko [27]

Answer:

aqueous solution

Explanation:

7 0
3 years ago
A solution prepared by dissolving 0.100 mole of propionic acid in enough water to make 1.00 L of solution is observed to have a
torisob [31]

Answer:

C) k_a=1.3\times 10^{-5}

Explanation:

pH is defined as the negative logarithm of the concentration of hydrogen ions.

Thus,  

pH = - log [H⁺]

The expression of the pH of the calculation of weak acid is:-

pH=-log(\sqrt{k_a\times C})

Where, C is the concentration = 0.5 M

Given, pH = 2.94

Moles = 0.100 moles

Volume = 1.00 L

So, Molarity=\frac{Moles}{Volume}=\frac{0.100}{1.00}\ M=0.100\ M

C = 0.100 M

2.94=-log(\sqrt{k_a\times 0.100})

\log _{10}\left(\sqrt{k_a0.1}\right)=-2.94

\sqrt{0.1}\sqrt{k_a}=\frac{1}{10^{2.94}}

k_a=1.3\times 10^{-5}

4 0
2 years ago
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