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3 years ago

Which of these elements is the most ductile?

Chemistry

2 answers:

Inessa05 [86]3 years ago

8 0

The answer is going to be mercury

Agata [3.3K]3 years ago

6 0

The answer is B Mercury

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37. How many grams does 4.00 moles of H20 weigh?

ivanzaharov [21]

Answer:

72 g

Explanation:

n=m/mr

m=n*mr

=4*(2+16)

+72 g

4 0

4 years ago

Of the following, where would we most likely find the most abundant storage of water?

mafiozo [28]

It would be D) The Hydrosphere

7 0

4 years ago

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When you pour 125 grams of solute into 1.25 Liters of 35 grams of crystal sink to the bottom and do not dissolve. What is the sa

Sati [7]

Answer:

72 g/L

Explanation:

The dissolved amount of solute is the difference between the amount you have poured and the amount that precipitated:

125 g - 35 g = 90 g

Thus, 90 grams of solute were dissolved in 1.25 liters. The saturation point is the ratio between the grams dissolved and the volume in liters:

saturation point = 90 g/1.25 L = 72 g/L

4 0

3 years ago

The heat of vaporization for water is 40. 7 kJ/mol. How much heat energy must 150. 0 g of water absorb to boil away completely?

netineya [11]

The heat absorbed by the water sample for vaporization has been 6,105 kJ. Thus, option D is correct.

The heat of vaporization has been the amount of heat required to vaporize 1 gram of liquid.

The heat required for the vaporization has been given as:

$Q=m\Delta H_{vap}$

<h3 /><h3>Computation for the Heat of vaporization</h3>

The heat of vaporization of water has been given as, $\Delta H_{vap}=40.7\;\rm kJ/mol$

The mass of water sample has been, $m=150\;\rm g$

Substituting the values for the heat energy absorbed, <em>Q:</em>

<em />

<em /> $Q=150\;\times\;40.7\;\rm kJ\\
\textit Q=6,105\;kJ$

The heat absorbed by the water sample for vaporization has been 6,105 kJ. Thus, option D is correct.

Learn more about heat of vaporization, here:

brainly.com/question/2427061

3 0

3 years ago

Consider the following reaction at equilibrium: 2CO2 (g) ↔ 2CO (g) + O2 (g) ∆H° = -514 kJ Le Châtelier's principle predicts that

Elza [17]

<h3><u>Answer;</u></h3>

increase the partial pressure of CO2

<h3><u>Explanation;</u></h3>

2CO(g) + O2(g) -------> 2CO2(g) + heat

Removel of Oxygen makes the equilibrium to move towards the left side (reactants) because the reactants concentration is decreasing. According to the LeChâtelier’s principle equilibrium moves towards the lower concentration.
When the partial pressure of any of the gaseous reactants or of the products is increased, the position of equilibrium is shifted so as to decrease its partial pressure. In this case, the removal of oxygen causes a shift to to the left which causes an increase in the partial pressure of CO2.

6 0

3 years ago

Read 2 more answers