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MAVERICK [17]
3 years ago
11

What volume (L) will 3.56 mol NH3 occupy at STP. (1 point)

Chemistry
1 answer:
mart [117]3 years ago
7 0

Answer:

B

Explanation:

I hope it helps you good luck

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Which of the following statements describes the law of conservation of mass?
SCORPION-xisa [38]

Explanation:

I think a is correct answer

8 0
2 years ago
Kalia spent a quarter of her weekly allowance on a movie. The movie was $4.75. What is her weekly allowance?
olchik [2.2K]

Answer:

$17

Explanation:

$4.75 is equal to 0.75 * x value, where x is the weekly allowance

$4.75=0.75x

$17=x

7 0
2 years ago
A 73.6 g sample of aluminum is heated to 95.0°C and dropped into 100.0 g of water at 20.0°C. If the resulting temperature of the
Softa [21]

Answer:

The specific heat of aluminium is 0.875 J/g°C

Explanation:

Step 1: Data given

The mass of the aluminium sample = 73.6 grams

Initial temperature of the sample = 95.0 °C

Mass of water = 100.0 grams

Initial temperature of water = 20.0 °C

Final temperature of water and aluminium = 30.0 °C

The specific heat of water = 4.184 J/g°C

Step 2: Calculate the specific heat of aluminium

Q gained = Q lost

Qwater = -Qaluminium

Q =  m*c*ΔT

m(aluminium) * c(aluminium) * ΔT(aluminium) = - m(water) * c(water) * ΔT(aluminium)

⇒ mass of aluminium = 73.6 grams

⇒ c(aluminium) = TO BE DETERMINED

⇒ ΔT(aluminium) = The change of temperature = T2 - T1 = 30 .0 °C - 95.0 °C = -65.0°C

⇒ mass of water = 100.0 grams

⇒ c(water ) = The specific heat of water = 4.184 J/g°C

⇒ ΔT(water) = The change of temperature of water = T2 - T1 = 30.0 - 20.0 = 10.0 °C

73.6g * c(aluminium) * -65.0 °C = 100.0g * 4.184 J/g°C * 10.0°C

-4784 * c(aluminium) = -4184

c(aluminium) = 0.875 J /g°C

The specific heat of aluminium is 0.875 J/g°C

7 0
3 years ago
Provide at least three indicators of a chemical change that are present in burning a piece of paper.
Pie

Answer:

Some chemical indicators perceived while a piece of paper is burning are:

Production of an Odor: there is a smell of burnt paper

Change in Temperature:  combustion is a highly exothermic reaction , so the temperature increase

Change in Color: paper changes to ashes as the burning process occurs

3 0
3 years ago
A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is
Brilliant_brown [7]
But what is the width of the molecule
5 0
3 years ago
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