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3 years ago

LOOK AT THE PICTURE!! i’ll mark as brainliest!!

Chemistry

2 answers:

Lera25 [3.4K]3 years ago

8 0

Answer:

Explanation:

Fofino [41]3 years ago

8 0

First I’d go with Cl-Cl. Second I would go with sodium iodide

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The reaction that will probably power the first commercial fusion reactor is:3 0 H + 2 1 H image from custom entry tool4 2 He +

Lelechka [254]

Answer:

2.8087*10^-12 kJ per mole of reaction (2.8087*10^-12 kJ/mol).

Explanation:

To calculate the energy produced, we need to write a balanced equation for the reaction and determine the change in the masses of the reactants and products. Afterward, we can use the energy equation to determine the energy produced. The balanced equation for the nuclear reaction is shown below:

³₁H + ²₁H ⇒⁴₂He + ¹₀n

The masses of atoms are ³₁H is 3.01605 amu, ²₁H is 2.0140 amu, ⁴₂He is 4.00260 amu, and ¹₀n is 1.008665 amu.

change in mass Δm = (3.01605+2.0140) - (4.00260+1.008665) = 0.0188 amu

Energy produced, E = m*C^2

C is the speed of light = 3*10^8 m/s and 1 amu = 1.66*10^-27 kg

Therefore:

E = 0.0188*1.66*10^-27 * (3*10^8)^2 = 2.8087*10^-12 kJ per mole of reaction.

Therefore, in scientific notation, the energy released is 2.8087*10^-12 kJ/mol

7 0

3 years ago

How is a mixture such as a plate of pasta different from a mixture such as air

stealth61 [152]

Answer:

Well there is a lot of differences between the two. Its called homogeneous and Heterogeneous mixtures. Homogeneous mixtures are all the substances are evenly distributed throughout the mixture (salt water, air, blood). Heterogeneous mixtures are the substances that are not evenly distributed (chocolate chip cookies, pizza, rocks). So Pasta with sauce and meatballs is heterogeneous and air is homogeneous

HOPE THIS HELPS HAVE A GREAT DAY!!~

Explanation:

6 0

3 years ago

Consider the following balanced equation for the following reaction:

balandron [24]

<u>Answer:</u> The amount of carbon dioxide formed in the reaction is 47.48 grams

<u>Explanation:</u>

For the given chemical equation:

$15O_2(g)+2C_6H_5COOH(aq.)\rightarrow 14CO_2(g)+6H_2O(l)$

To calculate the actual yield of carbon dioxide, we use the equation:

$\%\text{ yield}=\frac{\text{Actual yield}}{\text{Theoretical yield}}\times 100$

Percentage yield of carbon dioxide = 83 %

Theoretical yield of carbon dioxide = 1.30 moles

Putting values in above equation, we get:

$83=\frac{\text{Actual yield of carbon dioxide}}{1.30moles}\times 100\\\\\text{Actual yield of carbon dioxide}=\frac{1.30\times 83}{100}=1.079moles$

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Molar mass of carbon dioxide = 44 g/mol

Moles of carbon dioxide = 1.079 moles

Putting values in above equation, we get:

$1.079mol=\frac{\text{Mass of carbon dioxide}}{44g/mol}\\\\\text{Mass of carbon dioxide}=(1.079mol\times 44g/mol)=47.48g$

Hence, the amount of carbon dioxide formed in the reaction is 47.48 grams

8 0

4 years ago

Describe two advantages and two disadvantages of building your 3D model with modeling clay. (5 points)

marishachu [46]

Answer:

A model or simulation is only as good as the rules used to create it. It is very difficult to create an entirely realistic model or simulation because the rules are based on research and past events. The main disadvantage of simulations is that they aren't the real thing.

Explanation:

8 0

3 years ago

If I give my teacher chocolate, then she will give me less homework because she will be happier

Softa [21]

Good idea!maybe I should try that

6 0

4 years ago