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Andreyy89
3 years ago
6

Which of the following objects has the greatest kinetic energy?

Chemistry
1 answer:
kap26 [50]3 years ago
5 0

Answer:

A.

Explanation:

All about mass and velocity... So if they all have the same mass, you're looking for which has the most velocity to find which has the greatest kinetic energy.

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How many molecules are present in 4.21 moles of HBr?​
salantis [7]

Answer:

The answer is

<h3>2.53 × 10²⁴ molecules</h3>

Explanation:

The number of molecules present can be found by using the formula

<h3>N = n × L</h3>

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 4.21 × 6.02 × 10²³

We have the final answer as

<h3>2.53 × 10²⁴ molecules</h3>

Hope this helps you

6 0
3 years ago
How many grams of kclo3 can be dissolved in 100 grams of water at 30 degrees Celsius
kondaur [170]
<span>The solubility of KClO</span>₃ : ( 10.1 / 100 g water ) at 30ºC

10.1 g ------------ 100 g ( H₂O )
    ? g ------------- 100 g ( H₂O )

Mass of KClO₃ :

100 * 10.1 / 100

1010 / 100 = 10.1 g of KClO₃

hope this helps!
8 0
3 years ago
Which technique reveals latent fingerprints on wooden furniture?
love history [14]

Answer: Nonporous

Explanation: I don’t know if this is right but please correct me!

7 0
3 years ago
Read 2 more answers
Which way of expressing concentration includes (a) volume of solution;
Sergio [31]

Molarity and normality are the ways of expressing concentration which includes the volume of the solution.

As we know,

Molarity is defined as the number of moles of solute dissolved in 1L of the solution. Thus,

M = no. of moles of solution/ Volume of solution on litres.

while, Normality is the number of gram equivalents of the solute dissolved per litre of the solution.

N = Gram equivalent of the solute/ volume of solution in litres.

while, the other concentration expressing terms such as mole fraction, molality includes the mass of the solution and solvent respectively.

To know more about molarity visit the link:

brainly.com/question/9754178?referrer=searchResults

#SPJ4

6 0
1 year ago
A student measures the pressure and volume of an empty water bottle to be 1. 4 atm and 2. 3 l
rewona [7]

The new volume of the bottle is 5.07 L.

<h3>What is Boyle's Law?</h3>

It is a gas law that states the pressure decrease with the increase in the pressure.

By the formula

\rm P_1V_1= P_1V_2

Given that, volume1 is 2.3l

Pressure1 is 4 atm.

Pressure2 to 0.65 atm.

V2 is to find?

Putting the values in the equation

\rm 1.4\times 2.3 = 0.65 \times V_2\\\\V_2 = 5.07 L

Thus, the new volume of the bottle is 5.07 L.

Learn more about Boyle's Law

brainly.com/question/1437490

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6 0
2 years ago
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