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2 years ago

With the aid of a balanced chemical equation explain Chemical Reactions and the Types Of Chemical Reaction

Chemistry

1 answer:

e-lub [12.9K]2 years ago

6 0

Answer:

Answers

1.)reactants: nitrogen and hydrogen; product: ammonia.

2.)reactants: magnesium hydroxide and nitric acid; products: magnesium nitrate and water.

3.)N 2 + 3H 2 → 2NH 3

4.)Mg(OH) 2 + 2HNO 3 → Mg(NO 3) 2 + 2H 2O.

5.)2NaClO 3 → 2NaCl + 3O 2

6.)4Al + 3O 2 → 2Al 2O 3

7.)N 2(g) + 3H 2(g) → 2NH 3(g)

Explanation:

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Why cant fungi make there own food using photosynthesis

dangina [55]

Fungi cannot make their food from sunlight, water and carbon dioxide as plants do, in the process known as photosynthesis

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3 years ago

A particular experiment requires 13.5 µl hydrochloric acid solution. if 250 ml hydrochloric acid solution is available, how many

ladessa [460]

The amount of HCl required for one experiment - 13.5 µl
the volume in terms of L - 13.5 x 10⁻⁶ L
the volume of HCl available - 0.250 L
since one experiment uses up - 13.5 x 10⁻⁶ L
then number of experiments - 0.250 L / 13.5 x 10⁻⁶ L = 1.8 x 10⁴ times
the experiment can be carried out 18000 times

6 0

2 years ago

Read 2 more answers

A sample of substance X that has a mass of 326. 0 g releases 4325. 8 cal when it freezes at its freezing point. If substance X h

solmaris [256]

The molar heat of fusion of X has been 775.6 cal/mol. Thus, option C is correct.

The molar heat of fusion has been defined as the energy absorbed or released by a mole of substance in converting between solid and liquid state.

<h3>Computation for the molar heat of fusion</h3>

The given mass of substance X has been, 326 g.

The molar mass of substance X has been 58.45 g/mol.

The moles of sample have been given as:

$\rm Moles=\dfrac{Mass}{Molar\;mass}\\\\ Moles\;X=\dfrac{326\;g}{58.45\;g/mol}\\\\ Moles\;X=5.58\;mol$

Thus, the amount of heat absorbed by 5.58 mol of sample has been 4325.8 cal.

The amount of heat absorbed by a mole of sample has been:

$\rm 5.58\;mol=4325.8\;cal\\\\1\;mol=\dfrac{4325.8\;cal}{5.58\mol} \\\\1\;mol=775.6\;cal/mol$

The amount of heat absorbed by a mole of sample in meting has been the molar heat of fusion.

Thus, the molar heat of fusion of X has been 775.6 cal/mol. Thus, option C is correct.

Learn more about heat of fusion, here:

brainly.com/question/87248

3 0

1 year ago

4.2 L of a gas has a pressure of 560mmHg at 72⁰F. What is the temperature at760mmHg if the volume is still 4.2 L? (5 pts)

IgorLugansk [536]

Answer:

The temperature at 760mmHg if the volume is still 4.2 L is 400.862 K

Explanation:

Gay Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. This law can be expressed mathematically as follows:

$\frac{P}{T} =k$

Having an initial state 1 and a final state 2, the following is true:

$\frac{P1}{T1} =\frac{P2}{T2}$

In this case:

P1= 560 mmHg
T1= 72 F= 295.372 K (being 32 F= 273.15 K)
P2= 760 mmHg
T2= ?

Replacing:

$\frac{560 mmHg}{295.372 K} =\frac{760 mmHg}{T2}$

Solving:

$T2= 760 mmHg*\frac{295.372 K}{560 mmHg}$

T2= 400.862 K

8 0

2 years ago

Pls Answer ASAP!!! Need to turn in in 5mins!!!

Citrus2011 [14]

Answer:

Sulfur

Explanation:

I'm sorry I was too late!

If there is an excess of a substance in a reaction, then there is more than enough to complete the reaction. This means that, because we have a specific amount of sulfur, it has to be the limiting reagent.

4 0

2 years ago