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2 years ago

* Gravity affects the mass of a brick. True False

Chemistry

2 answers:

Inessa05 [86]2 years ago

8 0

Answer:

True

Explanation:

Because anything that has mass also has gravity

Aleksandr [31]2 years ago

7 0

True because anything that has a mass is affected by gravity no matter what it is

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In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol). Calculate the number of moles of chl

Annette [7]

Answer:

3.67 mol Cl

Explanation:

We need to convert g of Cl 2 to moles of Cl. First we divide 130 gCl2 by the molar mass (70.90 gCl2/mol) to find out how many moles of Cl2 do we have.

130 gCl2 x $\frac{1 mol Cl2 }{70.90 gCl2}$ = 1.83 mol Cl2

Then we need to convert 1.83 mol de Cl2 to moles of Cl. We have 2 moles of Cl in every Cl2 molecule so we just need to multiply by 2.

1.83 molCl2 x $\frac{2 molCl}{1 molCl2}$ = 3.67 molCl

8 0

3 years ago

Read 2 more answers

The [Fe(H₂O)₆]³⁺ complex requires a relatively small amount of energy to promote an electron from the t2g to the eg. Based on th

Olin [163]

Answer:

The spin of the complex is 5.92 B.M

Explanation:

Please see the attachments below

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2 years ago

How much heat, in joules, must be added to a 75.0-g iron block with a specific heat of 0.449 J/g °C to increase its temperature

svp [43]

Answer:

50,849.25 Joules

Explanation:

The amount of heat, Q, required to raise the temperature of a body with mass, m, and specific heat capacity, c is given by:

Q = mcΔT, where ΔT represents the change in temperature.

In the case of the iron block:

m = 75 g

c = 0.449 J/g °C

ΔT = 1535 - 25 = 1510 °C

Therefore,

Q = 75 g x 0.449 J/g °C x 1510 °C

= 50,849.25 Joules

Hence, 50,849.25 Joules of heat must be added to a 75.0-g iron block with a specific heat of 0.449 J/g °C to increase its temperature from 25 °C to its melting temperature of 1535 °C

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2 years ago

Which of the following is true about metallic bonding?

Anna [14]

Answer:

I think the answer is option B

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2 years ago

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What is the total ionic equation for the following reaction?

schepotkina [342]

Answer: Option (d) is the correct answer.