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3 years ago

Based on the chemical equation provided, use the drop-down menu to choose the coefficients that will balance the

Chemistry

1 answer:

WINSTONCH [101]3 years ago

8 0

Answer:

2(H2) + 1(O2) = 2 (H2O) is the balanced equation

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Determine the energy released per kilogram of fuel used. given mev per reaction, calculate energy in joules per kilogram of reac

tatuchka [14]

The energy released in nuclear reactions are far larger than that released in chemical reactions due to the release of nuclear energy from the nucleus.

<h3>Why is the energy released in a reaction?</h3>

Energy is released in a reaction due to the breaking of bonds are well as formation of bonds.

The quantity of energy released in reactions differs according to the reaction type involved.

When compared to chemical reactions, the energy released in nuclear reactions are very much higher because of the changes that occurs in the nucleus of the atoms involving nuclear energy.

The energy, E released in nuclear reactions is given by the formula below:

$E = mc^{2}$

where m is the mass of the substance and c is the speed of light.

Therefore, the energy released in nuclear reactions are far larger than that released in chemical reactions.

Learn more about nuclear reactions at: brainly.com/question/984564

6 0

2 years ago

How much heat is needed to raise the temperature of 50g of a substance by 15c when the specific heat is 0.92?

kirill [66]

The heat needed to raise the temperature of 50g of substance by 15 c is calculated as follows

Heat = mc delta T

m= mass (50g)
c= specific heat capacity (0.92)
delta T= change in temperature( 15 c)

heat is therefore= 50 x 0.92 x 15 = 690

Nb: my answer has no units since the given specific heat capacity has no units

8 0

4 years ago

A gram of gold has the same ____ as a kilogram of gold

Mars2501 [29]

I think it might be mass

8 0

3 years ago

Help please help me

Alenkasestr [34]

Answer: It completely dissociates in water is a characteristic of strong acid.

Explanation:

An acid which dissociates completely to give hydrogen ions $(H^{+})$ is called a strong acid.

For example, HCl is a strong acid and it dissociates completely as follows.

$HCl \rightleftharpoons H^{+} + Cl^{-}$

Strong acids are able to conduct electricity in water as more number of ions are present in the solution as compared to the ions present in a solution of weak acid.

Strong acids increase the concentration of $H^{+}$ ions.

Thus, we can conclude that it completely dissociates in water is a characteristic of strong acid.

8 0

4 years ago

How many grams of dextrose are needed to make 725 mL of a 26.0% (w/v) dextrose solution? Note that mass is not technically the s

Diano4ka-milaya [45]

Answer:

188.5g of dextrose are needed

Explanation:

In Weight per volume percentage - %(w/v) -, the concentration is defined as the mass of solute in grams -In this case, dextrose-, in 100mL of solution.

As you want to prepare 725mL of a 26.0% (w/v) solution. you need:

725mL * (26g / 100mL) = 188.5g of solute =

<h3>188.5g of dextrose are needed</h3>

3 0

3 years ago