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3 years ago

The electrons in an insulator are tightly bound to their atoms.

Chemistry

2 answers:

Murrr4er [49]3 years ago

4 0

If its a true or false statement . the answer is true

Ierofanga [76]3 years ago

4 0

What is it asking?Is it supposed to be true or false?

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A sample of nitrogen gas, occupies a volume of 400ml at 2 atm pressure. What pressure must be applied to compare the gas to a vo

Lady_Fox [76]

<span>maybe you can try to look it up</span>

8 0

3 years ago

4. Magnesium and oxygen undergo a chemical reaction to

erastovalidia [21]

Answer:

About 16.1 grams of oxygen gas.

Explanation:

The reaction between magnesium and oxygen can be described by the equation:
$\displaystyle 2\text{Mg} + \text{O$_2$} \longrightarrow 2\text{MgO}$

24.4 grams of Mg reacted with O₂ to produce 40.5 grams of MgO. We want to determine the mass of O₂ in the chemical change.

Compute using stoichiometry. From the equation, we know that two moles of MgO is produced from every one mole of O₂. Therefore, we can:

Convert grams of MgO to moles of MgO.
Moles of MgO to moles of O₂
And moles of O₂ to grams of O₂.

The molecular weights of MgO and O₂ are 40.31 g/mol and 32.00 g/mol, respectively.

Dimensional analysis:

$\displaystyle 40.5\text{ g MgO} \cdot \frac{1\text{ mol MgO}}{40.31\text{ g MgO}} \cdot \frac{1\text{ mol O$_2$}}{2\text{ mol MgO}} \cdot \frac{32.00\text{ g O$_2$}}{1\text{ mol O$_2$}} = 16.1\text{ g O$_2$}$

In conclusion, about 16.1 grams of oxygen gas was reacted.

You will obtain the same result if you compute with the 24.4 grams of Mg instead:

$\displaystyle 24.4\text{ g Mg}\cdot \frac{1\text{ mol Mg}}{24.31\text{ g Mg}} \cdot \frac{1\text{ mol O$_2$}}{1\text{ mol Mg}} \cdot \frac{32.00\text{ g O$_2$}}{1\text{ mol O$_2$}} = 16.1\text{ g O$_2$}$

3 0

2 years ago

The rate of O2 production by the light reactions varies with the intensity of light because light is required as the energy sour

Mademuasel [1]

Answer:

Light reaction do not depends on dark reaction because the reaction that occur in presence of light cannot occur in dark . Photolysis, one of most important light reaction cannot take place in dark.

Explanation:

If concentration of carbon dioxide is decreased by 50% then the oxygen production will not be affected because oxygen is produced from the reduction of water.

8 0

4 years ago

A weather balloon has a volume of 52.5 liters at a temperature of 295 K. The balloon is released and rises to an altitude where

Goryan [66]

So you have a balloon rising through the atmosphere. use the formula p1/v1=p2/v2 and add the variables into the equation, leaving 295/52.5=252/x. multiply 252 by 52.5 and divide that number by 295.
52.5*252=13230. divide by 295 =44.9 L

5 0

3 years ago

Read 2 more answers

Using the standard enthalpies of formation for the chemicals involved, calculate the enthalpy change for the following reaction.

Firlakuza [10]

Answer: -134 kJ

Explanation:

The balanced chemical reaction is,

$3NO_2(g)+H_2O(l)\rightarrow 2HNO_3(aq)+NO(g)$