2 years ago

Unscramble the letters in Column A to form the correct word being described

Chemistry

1 answer:

CaHeK987 [17]2 years ago

5 0

Answer:

Monsoon: It is a seasonal wind system that lasts for a period of months.

Humid is the amount of water vapor or moisture content in the air

Explanation:

According to the given question, the words in column A has been unscrambled and they are "monsoon" and "Humid".

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Some water released 7800 J of energy when cooled from 78°C to 33°C. What was the mass of the water?

Karo-lina-s [1.5K]

Answer:

-41. 47

Explanation:

m = q / Cp x T

m = Mass

q = Energy (or joules)

Cp = Heat Capacity

T = Change in Temperature

Water's heat capacity is always 4.18.

This is the formula you'll need for change in temperature:

Final - Initial

So, 33 - 78 = -45

m = 7800 / 4.18 x -45

= -41.47

4 0

1 year ago

a chemical reaction produced 2.50 moles of nitrogen gas. what volume in liters, does this gas sample occupy at STP? (show your w

Harrizon [31]

The volume of N₂ at STP=56 L

<h3>Further explanation</h3>

Given

2.5 moles of N₂

Required

The volume of the gas

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, the volume per mole of gas or the molar volume-Vm is 22.4 liters/mol.

So for 2.5 moles gas :

$\tt 2.5\times 22.4=56~L$

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viktelen [127]

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