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vesna_86 [32]
2 years ago
8

Two star systems are part of a ________________ system formation.

Chemistry
1 answer:
Radda [10]2 years ago
5 0

Binary Stars I think

hope this is right and helps

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Solve this problem using the appropriate law. (Remember that ) What is the pressure of 1.9 mols of nitrogen gas in a 9.45 L tank
dedylja [7]
PV=nRT

You are funding pressure and you have V = 9.45L, n = 1.9 moles, R = gas constant, and T = 228 K

P(9.45L) = (1.9moles)(0.0821)(228K)

Find P

Multiply

9.45P = 35.57

Divide

P = 3.76 L of N

Answer should be 3.76 liters of nitrogen
7 0
4 years ago
Read 2 more answers
The atomic masses of 35-Cl (75.53 percent) and 37-Cl (24.47 percent) are 34.968 amu and 36.956 amu, respectively. Calculate the
AlladinOne [14]

Answer:

35.45 amu is the average atomic mass of chlorine.

Explanation:

The average atomic mass is given :

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i

Atomic mass of 35-Cl = 34.968 amu

Percentage abundance of 35-Cl = 75.53%

Fractional abundance of 35-Cl = 0.7553

Atomic mass of 37-Cl = 36.956 amu

Percentage abundance of 37-Cl = 24.47%

Fractional abundance of 37-Cl = 0.2447

Average atomic mass of chlorine:

=34.968 amu\times 0.7553+36.956 amu\times 0.2447=35.45 amu

35.45 amu is the average atomic mass of chlorine.

4 0
4 years ago
Your lab partner accidentally spills some acid on his wrist and watchband. You should: (Check all that apply.)
nordsb [41]

Answer: Remove the watch and watchband immediately, and rinse his wrist for at least 15 minutes to be sure all hazardous material has been washed away. Let the TA inspect his wrist to see if it is okay.

Explanation:

The question is incomplete, the choices are:

a. Take him to the safety shower, and make sure he stands under it for at least 15 minutes to be sure all hazardous material has been washed away. b. Remove the watch and watchband immediately, and rinse his wrist for at least 15 minutes to be sure all hazardous material has been washed away. c. Let the TA inspect his wrist to see if it is okay.

d. Rinse the watch band before allowing him to put it back on.

An acid is traditionally considered to be any chemical compound that, when dissolved in water, produces a solution with greater hydronium cation activity than pure water, i.e., a pH less than 7. Both corrosive acids (and also corrosive bases) <u>are capable of destroying skin</u> by catalyzing the hydrolysis of fats, which are chemically esters. Also, when acids attack metals, hydrogen gas is often released.

This is why your lab partner should remove the watch and watchband immediately, and rinse his wrist for at least 15 minutes to be sure all hazardous material has been washed away. This ensures that the acid is can not damage the skin. And also the person should make sure that someone qualified checks it to see if it is okay.

7 0
4 years ago
What are three common examples of nuclear energy?
Elena L [17]
1) <span> The fusion reaction (hydrogens form helium) in the Sun syplies our planet with all of the energy.
2) Nuclear bombs -</span><span>uncontrolled fission reaction creates mass destruction.
3) </span><span>Nuclear power plant - controlled fission reaction suplies homes with electric energy.
</span>Nuclear fission<span> is </span>nuclear reaction<span> in which the </span>nucleus<span> of an atom splits into smaller parts.</span>
5 0
3 years ago
PLEASE HELP ME ASAP WITH THIS QUESTION!
Mariana [72]

Answer:

has very few trees

has cool and rainy winters

has dense shrubs and grasses

Explanation:

I've done this before! Good luck!

6 0
3 years ago
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