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2 years ago

What is a rechargeable battery?

Chemistry

1 answer:

aleksklad [387]2 years ago

6 0

Answer:

a group of electrochemical cells that can be recharged

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Which liquid has the highest vapor pressure

Harlamova29_29 [7]

Propanone is the liquid with the high vapor pressure. At standard of 101.3 kPa, it has the temperature of 50 degrees Celsius.

4 0

2 years ago

Ammonium dihydrogen phosphate, formed from the reaction of phosphoric acid with ammonia, is used as a crop fertilizer as well as

Tema [17]

Answer:

a)The mass percentages of nitrogen and phosphorus in the compound is 24.34% and 26.95% respectively.

b) 14.78 grams ammonia is incorporated into 100. g of compound.

Explanation:

a) Ammonium dihydrogen phosphate that is $NH_6PO_4$ .

Molecular mass of ammonium dihydrogen phosphate = M

M = 115 g/mol

Percentage of an element in a compound:

$\frac{\text{Number of atoms of element}\times \text{Atomic mass of element}}{\text{molecular mass of element}}\times 100$

Percentage of nitrogen:

$\frac{1\times 28 g/mol}{115 g/mol}\times 100=24.34\%$

Percentage of phosphorus:

$\frac{1\times 31g/mol}{115 g/mol}\times 100=26.95\%$

b) Percentage of ammonia in 1 molecule of ammonium dihydrogen phosphate.

Molar mass of ammonia = 17 g/mol

$\%=\frac{17 g/mol}{115 g/mol}\times 100=14.78\%$

Amount of ammonia in 100 grams of compound:

14.78% of 100 g of ammonium dihydrogen phosphate:

$\frac{14.78}{100}\times 100 g=14.78 g$

14.78 grams ammonia is incorporated into 100. g of compound.

4 0

2 years ago

When the pressure and number of particles are kept constant for a sample of gas, which of the following is also constant for the

Leno4ka [110]

The answer is D....................

7 0

2 years ago

What is the molality of a solution of 0.35 moles of sucrose in dissolved in

telo118 [61]

Answer:

i Think it is 1.3500

Explanation:

5 0

2 years ago

7. if you kick a tennis ball with 50 N of force and then kick a soccer ball with 50 N of force,

BabaBlast [244]

Answer:

It depends of how heavy the object is so i would say the tennis ball would go the farthest. And the amount of air it has!

Explanation:

5 0

2 years ago