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In-s [12.5K]
2 years ago
11

Which of the following best describes a vacuum? Hot Cold Shiny Empty

Chemistry
2 answers:
Sauron [17]2 years ago
7 0

Answer:

hot

Explanation:

wel2 years ago
4 0

Answer:

shiny

Explanation:

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Put an x of it is a physical property but of it is a chemical propety pit a +
makkiz [27]
  • Density=a+
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4 0
2 years ago
II. The student then takes a 1.00 M stock
-BARSIC- [3]

Answer:

0.244 M.

Explanation:

From the question given above, the following data were obtained:

Molarity of stock solution (M₁) = 1 M

Volume of stock solution (V₁) = 0.305 L

Volume of diluted solution (V₂) = 1.25 L

Molarity of diluted solution (M₂) =?

The molarity of the diluted solution can be obtained by using the dilution formula as illustrated below:

M₁V₁ = M₂V₂

1 × 0.305 = M₂ × 1.25

0.305 = M₂ × 1.25

Divide both side by 1.25

M₂ = 0.305 / 1.25

M₂ = 0.244 M

Thus, the molarity of the diluted solution is 0.244 M

3 0
3 years ago
Which of these is part of the geosphere?
frez [133]
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3 0
2 years ago
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What is the temperature of 0.750 mol of a gas stored in a 6,050 mL cylinder al 221 atm?
Rasek [7]

Answer:

T = 246 K

Explanation:

Given that,

Number of moles, n = 0.750 mol

The volume of the cylinder, V = 6850 mL = 6.85 L

Pressure of the gas, P = 2.21 atm

We need to find the temperature of the gas stored in the cylinder. We know that,

PV= nRT

Where

R is gas constant

T is temperature

So,

T=\dfrac{PV}{nR}\\\\T=\dfrac{2.21\times 6.85}{0.75\times 0.0821}\\T=245.85\ K

or

T = 246 K

So, the temperature of the gas is equal to 246 K.

4 0
2 years ago
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5. Hormones are released from the endocrine glands

6. a. neck
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8. produces hormones that regulate the body's metabolic rate controlling heart, muscle and digestive function, brain development.

9. regulate your metabolism, immune system, blood pressure, respond to stress etc.

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