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mr Goodwill [35]
2 years ago
13

The measure of a right angle is

Chemistry
1 answer:
yawa3891 [41]2 years ago
7 0
Answer:

90° is the measure, hope this helped :)
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what is the answer, don't have to show proof but explain how that's all!!!!!! will mark brainliest this is science class by the
just olya [345]

Answer:

B. Corn needs rain to grow, but too much rain is harmful.

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2 years ago
Potassium is located in the first group of the periodic table. Use this information to answer each question.
melamori03 [73]

Explanation:

potassium is metal

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3 years ago
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50 POINTS! PLEASE HELP!A gas in a balloon at constant pressure has a volume of 120.0mL at -12.30C. What is its volume at 197.00C
Cerrena [4.2K]

Answer:

Final volume=V₂ = 216.3 mL

Explanation:

Given data:

Initial volume = 120.0 mL

Initial temperature = -12.3 °C (-12.3 +273 = 260.7 K)

Final volume = ?

Final temperature = 197.0 °C (197+273 = 470 K)

Solution:

We will apply Charles Law to solve the problem.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁

V₂ = 120 mL × 470 K /260.7K

V₂ = 56400 mL.K /260.7K

V₂ = 216.3 mL

4 0
3 years ago
How many moles of NaCl are present in 2.50 L of a 0.070 M solution?
posledela

Given :

Volume of NaCl solution 2.5 L .

Molarity of NaCl solution is 0.070 M .

To Find :

How many moles are present in the solution.

Solution :

Let, n be the number of moles.

We know, molarity is given by :

M = \dfrac{n}{V(in\ L)}

So,

n = M \times V\\\\n = 0.070\times 2.5 \\\\n = 0.175\ moles

Therefore, number of moles of NaCl is 0.175 moles.

6 0
3 years ago
according to the Aufbau principle, which principle energy level would have higher energy, n=2 or n=5?
mars1129 [50]

Answer:b

Explanation:

8 0
2 years ago
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