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3 years ago

How do chemist control the speed of explosions?

Chemistry

1 answer:

Ede4ka [16]3 years ago

6 0

Answer:

Explosives are chemicals that have very fast burn rates at different degree.

First the Dynamite:

-The dynamite is an explosive that made from nitroglycerin, and it is a type of the explosive that has a fast burning rate and makes it very strong explosive. Physical shock can make the dynamite to explode and makes it highly dangerous.

-But the fireworks are a class of low explosive, the stuff that used in it is black powder.Because this explosive has a slow burn rate than dynamite that makes it less dangerous and safer than dynamite explosives

-SO although the dynamite and the fireworks are both explosives they have different burn rates which make them totally different in safeness.

Explanation:

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Valence electrons are the ONLY electrons that are involved in bonding.

ELEN [110]

Yes that is definitely true

7 0

4 years ago

How many moles of water are represented by 8.33×10^18 molecules of water

DENIUS [597]

Answer:

number of moles of water (n) = 1.383 x10 ⁻⁵ mol

Explanation:

Data Given:

No. of molecules of water = 8.33×10¹⁸

No. of Mole of water = ?

Formula Used to calculate

no. of moles = numbers of particles (ions, molecules, atoms) /Avogadro's number

Avogadro's no. = 6.023 x10²³

So the formula could be written as

no. of moles (n) = no. of molecules of water /6.023 x10²³

Put the values in above formula

no. of moles (n) = 8.33×10¹⁸ /6.023 x10²³

no. of moles (n) = 1.383 x10 ⁻⁵

so 1.383 x10 ⁻⁵ moles of water are represented by 8.33×10¹⁸ molecules of water.

7 0

3 years ago

You have 16.0 g of some compound and you perform an experiment to remove all of the oxygen, 11.2 g of iron is left. What is the

oksian1 [2.3K]

The empirical formula of this compound is equal to $Fe_{2}O_3$ .

<h3>Empirical formula</h3>

To calculate the empirical formula of a compound, it is necessary to know the number of moles present.

Therefore, we will use the molar mass of iron and oxygen to find the amount of moles, so that:

$MM_O = 16g/mol\\MM_Fe = 55.8g/mol$

$MM = \frac{m}{mol}$

Oxygen

$16 = \frac{4.8}{mol}$

$mol = 0.3$

Iron

$55.8 = \frac{11.2}{mol}$

$mol = 0.2$

Finally, as the empirical formula is composed of integers numbers of moles, just multiply the values by the smallest common factor to transform into an integer, so that:

O => $0.3 \times 10 = 3moles$

Fe => $0.2 \times 10 = 2moles$

So, the empirical formula of this compound is equal to $Fe_{2}O_3$

Learn more about empirical formula in: brainly.com/question/1363167

6 0

3 years ago

Which of the following is a natural material?

const2013 [10]

Answer: Cotton

Explanation: Some cement is natural but i don't think that's what question is referring to. C: polyester is made from synthetic fibers. D: nylon is man made.

Also, cotton grows on plants.

8 0

3 years ago

Calculate the freezing point of a solution containing 15 grams of kcl and 1650.0 grams of water. the molal-freezing-point-depres

Soloha48 [4]

Answer is: freezing point is -0,226°C.
Answer is: the molal concentration of glucose in this solution is 1,478 m.
m(KCl) = 15 g.
n(KCl) = m(KCl) ÷ M(KCl).
n(KCl) = 15 g ÷ 74,55 g/mol.
n(KCl) = 0,2 mol
m(H₂O) = 1650 g ÷ 1000 g/kg = 1,65 kg.
b = n(KCl) ÷ m(H₂O).
b = 0,2 mol ÷ 1,65 kg = 0,122 m.
Kf(water) = 1,86°C/m.
ΔT = Kf(water) · b(solution).
ΔT = 1,86°C/m · 0,122 m.
ΔT = 0,226°C.

4 0

3 years ago

Read 2 more answers