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atroni [7]
3 years ago
12

What is true about most of the wavelengths found in the electromagnetic spectrum?

Chemistry
1 answer:
olasank [31]3 years ago
7 0
D, you can't see ultraviolet rays and other similar frequency waves with the naked eye.
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What is the mass, in grams, of one mole of any substance known as?
natima [27]

Answer:

The answer is B. the molar mass.

The molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles.

7 0
4 years ago
Is this an element or a compound C12H24O12
goldenfox [79]

Answer:

it's got to do something with milk I guess it's the sugary substance found in milk and it's a compound

7 0
3 years ago
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A mixture of 14.0 grams of H2, 84.0 grams of N2, and 64.0 grams of O2 are placed in a flask. The partial pressure of the O2 is 7
Hitman42 [59]

Answer:

P_{tot}=465.27torr

Explanation:

Hello there!

In this case, according to the given information, it will be possible for us to use the Dalton's law, in order to solve this problem. However, we first need to calculate the mole fraction of oxygen by firstly calculating the moles of each gas:

n_{H_2}=\frac{14.0g}{2.02g/mol} =6.93mol\\\\n_{N_2}=\frac{84.0g}{28.02g/mol}=3.00mol\\\\n_{O_2}=\frac{64.0}{16.00g/mol}  =2.00mol

Next, we calculate such mole fraction as follows:

x_{O_2}=\frac{2}{6.93+3+2} =0.168

Then, given the following equation:

P_{O_2}=P_{tot}*x_{O_2}

So we solve for the total pressure as follows:

P_{tot}=\frac{P_{O_2}}{x_{O_2}} \\\\P_{tot}=\frac{78.00torr}{0.168} \\\\P_{tot}=465.27torr

Regards!

6 0
3 years ago
Which choice describes the function of the pancreas gland?
gayaneshka [121]

Answer:

A. It secretes hormones that regulate blood sugar levels.

Explanation:

The pancreas is the organ that helps in the process of digestion of the food. The location of the pancreas is in the abdomen. It helps in the process of digestion of the food and regulating the blood sugar level in the body. It helps in regulating and controlling the glucose level in the body during the process of digestion. Pancreas produces enzymes that are useful in the process of digestion.

6 0
3 years ago
Advantage fossil fuel​
allochka39001 [22]

Answer:

The advantages of fossil fuels are that they are abundant and accessible, they provide a large amount of concentrated energy, they are relatively low cost and they can be transported relatively easily.

Explanation:

I got it from Google and Google is always right lol

.

3 0
4 years ago
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