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andrezito [222]
3 years ago
9

15. Which of the following BEST describes weather?

Chemistry
2 answers:
saw5 [17]3 years ago
7 0

Answer:

Explanation:

Which of the following best describes weather? day to day conditions of the atmosphere at a place in regards to heat, dryness, sunshine, wind, rain, etc. long-term conditions (30 or more years) of the atmosphere at a place in regards to heat, dryness, sunshine, wind, rain, etc.

Fudgin [204]3 years ago
4 0

Answer:

Weather is short term climate is long term.

Explanation:

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A student performing this experiment weights out 0.6680 grams of an antacid tablet. It is was determined that this tablet contai
Rufina [12.5K]

Answer:

63 wt%

Explanation:

0.4210/0.6680

3 0
3 years ago
If a sample of air initially occupies 240L at 2 atm how much pressure is required to compress it to 20L at constant temperature
IceJOKER [234]

Answer:

24 atm.

Explanation:

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

Initial volume (V₁) = 240 L

Initial pressure (P₁) = 2 atm

Final volume (V₂) = 20 L

Temperature = constant

Final pressure (P₂) =?

The final pressure required, can be obtained by using the Boyle's law equation as shown below:

P₁V₁ = P₂V₂

2 × 240 = P₂ × 20

480 = P₂ × 20

Divide both side by 20

P₂ = 480 / 20

P₂ = 24 atm

Thus, the final pressure required is 24 atm.

4 0
3 years ago
A gas sample occupies 2.1 L at a pressure of 101 kPa.
Verizon [17]

Answer:

D) 0.9 L

Explanation:

At constant temperature,

PV = Constant

so,

P1.V1 = P2. V2

101 × 2.1 = 235 × V2

V2 = 0.9 L

6 0
2 years ago
Read 2 more answers
A student neutralized 16.4 milliliters of HCl by adding 12.7 milliliters of 0.620 M KOH. What was the molarity of the HCl acid?
Katen [24]
V ( HCl ) = 16.4 mL / 1000 => 0.0164 L

M( HCl) = ?

V( KOH) = 12.7 mL / 1000 => 0.0127 L

M(KOH) = 0.620 M

Number of moles KOH:

n = M x V

n = 0.620 x 0.0127

n = 0.007874 moles of KOH

number of moles HCl :

<span>HCl + KOH = H2O + KCl
</span>
1 mole HCl ------ 1 mole KOH
<span>? mole HCl--------0.007874 moles KOH
</span>
moles HCl = 0.007874 * 1 / 1

= 0.007874 moles of HCl

M = n / V

M = 0.007874 / <span>0.0164

</span>= 0.480 M

Answer (2)

hope this helps!

4 0
3 years ago
A balloon containing 0.0400 mol of a gas with a volume of 500 mL was expanded to 1.00 L. Answer the questions and round answers
grandymaker [24]

the number of moles 0.08

8 0
3 years ago
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