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3 years ago

Water circulates through Earth's water cycle by changing state state its acidity its acidity its turbidity

Chemistry

1 answer:

Lana71 [14]3 years ago

3 0

Complete question is;

Water circulates through Earth's water cycle by changing its _____.

A. state

B. acidity

C. turbidity

D. composition

Answer:

A: State

Explanation:

We can talk about this by observations about the states of water in the Earth's water cycle and even nature.

For example, water changing from liquid to steam(gas) in evaporation; under certain temperatures/conditions snow undergoes sublimation directly from solid to gas and also undergoes melting from solid to liquid; water vapour in the atmosphere undergoes condensation and cooling to form rain.

Thus, we can say that water circulates through the Earth's water by changing it's state.

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The "dots" in a electron dot structure (Lewis Dot) represent the following:

sashaice [31]

Answer:

the statement is true.....

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3 years ago

Blank moles of carbon dioxide are required to make 7.2 moles of glucose. A plant using 618 grams of carbon dioxide and plenty of

Virty [35]

Answer:

43.2 moles of carbon dioxide are required and 421g of glucose could be produced

Explanation:

Based on the reaction:

6CO2 + 6H2O → C6H12O6 + 6O2

1 mole of glucose, C6H12O6, requires 6 moles of carbon dioxide. 7.2moles of glucose requires:

7.2mol C6H12O6 * (6mol CO2 / 1mol C6H12O6) =

<h3>43.2 moles of carbon dioxide are required</h3><h3 />

618g of CO2 -Molar mass: 44.01g/mol- are:

618g * (1mol / 44.01g) = 14.04moles CO2

Moles C6H12O6:

14.04moles CO2 * (1mol C6H12O6 / 6mol CO2) = 2.34moles C6H12O6

Mass glucose -Molar mass: 180.156g/mol-

2.34moles C6H12O6 * (180.156g / mol) =

<h3>421g of glucose could be produced</h3>

7 0

3 years ago

If 0.507J of heat leads to a 0.007 degree C change in water, what mass is present?

Ivanshal [37]

Answer:

17.3 g

Explanation:

<u>Given the following data;</u>

Quantity of heat, Q = 0.507 J
Temperature = 0.007°C
Specific heat capacity of water = 4.2 J/g°C

Mathematically, Heat capacity is given by the formula;

$Q = MCT$

Where;

Q represents the heat capacity or quantity of heat.
M represents the mass of an object.
C represents the specific heat capacity of water.
T represents the temperature.

Making "M" the subject of formula, we have;

$Mass, \ m = \frac {Q}{CT}$

Substituting the values into the formula, we have;

$Mass, \ m = \frac {0.507}{0.007*4.2}$

$Mass, \ m = \frac {0.507}{0.0294}$

<em>Mass, m = 17.3 grams</em>

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3 years ago

A tetrahedral molecule has ___ regions of high electron density around the central atom. these molecules have central atoms with

shtirl [24]

<span>The answer is "A tetrahedral molecule has 4 regions of high electron density around the central atom. These molecules have central atoms with 0 lone pairs and 4 atoms bonded to them." Based on the octet rule, the atom must have 8 electrons to become stable. As a result, the molecule will not have lone pairs.</span>

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4 years ago

Read 2 more answers

Need help I don't remember what to do?

Lina20 [59]

I'm just doing the ones that you don't have numbers already for.
2.) just leave it alone and it's correct
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5.) just leave it alone and it's correct
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I hope this helps you!!

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3 years ago