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3 years ago

WILL MARK BRAINLIEST. QUICK

Chemistry

2 answers:

mariarad [96]3 years ago

7 0

Explanation:

A nuclear reactor produces and controls the release of energy from splitting the atoms of uranium. Uranium-fuelled nuclear power is a clean and efficient way of boiling water to make steam which drives turbine generators.

Murrr4er [49]3 years ago

6 0

The Answer is D: Reactor products charge huge batteries.

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The formula for dichlorine monoxide

Ugo [173]

Cl2O but the two is a little two after Cl

6 0

4 years ago

Read 2 more answers

7. DNA is essential to living organisms because it O is a spiral helix can prevent disease O carries the genetic code O can brea

dsp73

Answer: DNA is essential...because it carries the genetic code.

Explanation:

Although the other statements are true about DNA, it's a spiral helix and can break apart, its main function is that it contains the genetic code for organisms.

5 0

3 years ago

If a pork roast must absorb kJ to fully cook, and if only 10% of the heat produced by the barbecue is actually absorbed by the r

kolezko [41]

Answer:

1,033.56 grams of carbon dioxide was emitted into the atmosphere.

Explanation:

$C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g),\Delta H_{rxn}=-2044 kJ/mol (assuming)$

Energy absorbed by pork,E = $1.6\times 10^3 kJ$ (assuming)

Total energy produced by barbecue = Q

Percentage of energy absorbed by pork = 10%

$10\%=\frac{E}{Q}\times 100$

$Q=\frac{E}{10}\times 100=\frac{1.6\times 10^3 kJ}{10}\times 100=1.6\times 10^4 kJ$

Since, it is a energy produced in order to indicate the direction of heat produced we will use negative sign.

Q = $-1.6\times 10^4 kJ$

Moles of propane burnt to produce Q energy =n

$n\times \Delta H_{rxn}=Q$

$n=\frac{Q}{\Delta H_{rxn}}=\frac{-1.6\times 10^4 kJ}{-2044 kJ/mol}=7.83 mol$

According to reaction , 1 mol of propane gives 3 moles of carbon dioxide. then 7.83 moles of will give:

$\frac{1}{3}\times 7.83 mol=23.49 mol$ carbon dioxide gas.

Mass of 23.49 moles of carbon dioxide gas:

23.49 mol × 44 g/mol =1,033.56 g

1,033.56 grams of carbon dioxide was emitted into the atmosphere.

8 0

3 years ago

The solubility of manganese (ii) hydroxide (mn(oh)2) is 2.2 x 10-5 m. what is the ksp of mn(oh)2?

frosja888 [35]

-When Ksp is the solubility product constant for a solid substance when it

dissolved in an aqueous solution, and measure the level at which a solute

dissolves in the solution.

- and we have the solubility and it is the maximum quantity of solute which can dissolve in a certain solute

we can assume the solubility = X = 2.2 x 10^-5 M

and when the balanced reaction equation is:

Mn(OH)2(s) ↔ Mn2+ + 2OH-

∴ the Ksp expression is = [Mn2+] [OH-]^2

when [Mn2+] = X = 2.2 x 10^-5 M

and [OH-] = 2X = 2*(2.2 x 10^-5) = 4.4 x 10^-5 M

by substitution:

∴ Ksp = X * (2X)^2

= (2.2 x 10^-5)(4.4 x 10^-5)^2

= 4.3 x 10^-14

7 0

3 years ago

Problem 3.100 a chemical plant uses electrical energy to decompose aqueous solutions of nacl to give cl2,h2, and naoh: 2nacl(aq)

chubhunter [2.5K]

First we calculate the number of moles of Cl2, that is:

moles Cl2 = 1.5*10^10 grams/71 grams/mol = 211267605.633802817 mol = 2.1 * 10 ^ 8 mole = x <span>

So that based on stoichiometry, the number of moles of NaOH = 2x and that of H2 = x mol

mass of NaOH = 4.2*10^8 * 40 =168*10^8 grams = 1.68 * 10^6 kg = 1.68 metric tons

<span>mass of H2 = 2.1*10^8 * 2 = 4.2*10^8 grams = 0.042 * 10^6 kg = 0.042 metric tons.</span></span>

4 0

3 years ago