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4 years ago

A jogger with a mass of 60 kg is moving at 2 m/s. What is the jogger's kinetic energy?

Chemistry

1 answer:

ziro4ka [17]4 years ago

6 0

Answer:

Ke = mgv

Explanation:

(60)(9.81)(2) =1177.2 joules persecond or Watts.

1.177 kilowatts

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Fluorine and Nitrogen react to form a covalent molecule. Which best describes the molecule they will make?

mafiozo [28]

I think a is the correct answer

7 0

3 years ago

At 25°C and constant pressure, carbon monoxide gas combines with oxygen gas to give carbon dioxide gas with the evolution of 10.

stealth61 [152]

Answer : The value of $\Delta H$ for the reaction is, -565.6 kJ

Explanation :

First we have to calculate the molar mass of CO.

Molar mass CO = Atomic mass of C + Atomic mass of O = 12 + 16 = 28 g/mole

Now we have to calculate the moles of CO.

$\text{Moles of }CO=\frac{\text{Mass of }CO}{\text{Molar mass of }CO}=\frac{1g}{28g/mole}=\frac{1}{28}mole$

Now we have to calculate the value of $\Delta H$ for the reaction.

The balanced equation will be,

$2CO(g)+O_2(g)\rightarrow 2CO_2(g)$

From the balanced chemical reaction we conclude that,

As, $\frac{1}{28}mole$ of CO release heat = 10.1 kJ

So, 2 mole of CO release heat = $2\times 28\times 10.1=565.6kJ$

Therefore, the value of $\Delta H$ for the reaction is, -565.6 kJ (The negative sign indicates the amount of energy is released)

4 0

3 years ago

Which of the following compounds would contain an electrostatic attraction as bonds between ions?

4vir4ik [10]

Answer:

iron sulfate

Explanation:

Electrostatic attraction as bonds between ions is characteristic of the electrovalent bond or the ionic bond

In this type of bond, there is electron transfer from one atom to another. The atom that looses electrons become positively charged while the atom that gains electrons becomes negatively charged.

In iron sulfate, there is electrostatic attraction between Fe II ions and sulphate ions, making iron sulfate an ionic compound.

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3 years ago

What major events cause islands to form in the pacific ocean

zmey [24]

One of the major events is Volcanos etc...

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3 years ago

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A student needs to determine the volume occupied by a gas in a 125 mL flask using the experimental setup described in the proced

Yuki888 [10]

Answer:

It would appear that the H2 gas is collected in a stoppered flask. Therefore, the volume of the gas is 138 mL minus the 5 mL occupied by the HCl, or 133 mL.

Explanation:

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3 years ago