4 years ago

Which formula is used to calculate acceleration? WORTH 30 POINTS

Chemistry

1 answer:

Harrizon [31]4 years ago

7 0

the formula used to calculate acceleration is C (i think)

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How do i know if a reaction is exo/endothermic?? help please.

goblinko [34]

Answer:

Explanation: in exothermic reaction heat is released out

In endothermic reaction heat is absorbed

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3 years ago

The kind of energy released when atoms are rearranged to form new bond

Murljashka [212]

The kind of energy released when atoms are rearranged to form new bonds is called Chemical energy.

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3 years ago

if a gas sample has a pressure of 761 mmhg at 0.00°c by how much does the temperature have to decrease to lower the pressure to

Nady [450]

<h3>Answer:</h3>

272.43 K or -0.718°C

<h3>Explanation:</h3>

We are given;

The initial pressure,P1 as 761 mmHg

Initial temperature, T1 as 0.00°C which is equivalent to 273.15 K

Final pressure as 759 mmHg

We are required to calculate the final temperature;

According to pressure law, the pressure of a gas and absolute temperature are directly proportional at constant volume.

That is; Pα T

Therefore, at varying pressure and temperature,

$\frac{P1}{T1}=\frac{P2}{T2}$

To get final temperature;

$T2=\frac{P2T1}{P1}$

$T2=\frac{(759 mmHg)(273.15K)}{761 mmHg}$

$T2=272.43K$

Therefore, the final temperature will be 272.43 K or -0.718°C

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3 years ago

Which of the following solvents will best dissolve wax, which is a complex mixture of compounds that mostly are CH3−CH2−CH2−CH2−

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Wax will be dissolved by nonpolar solvents: (a) hexane, (b) benzene and (d) carbon tetrachloride

Wax will not be dissolved by polar solvent such as (c) acetone and (e) water

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4 years ago

List one difference between blended fibres and regenerating synthetic fibres

Mashcka [7]

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4 years ago