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zepelin [54]
3 years ago
10

ASAP HURRY FOR BRAINLIST

Chemistry
1 answer:
Serggg [28]3 years ago
5 0

Answer:

unknown 2 po :}

2

unknown 2

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WHAT MASS OF WATER WILL BE PRODUCED FROM 2.70 MOLES OF CA(OH)2 REACTING WITH HCI
Keith_Richards [23]

<u>Answer:</u> The mass of water produced in the reaction is 97.2 grams

<u>Explanation:</u>

We are given:

Moles of calcium hydroxide = 2.70 moles

The chemical equation for the reaction of calcium hydroxide and HCl follows:

Ca(OH)_2+HCl\rightarrow CaCl_2+2H_2O

By Stoichiometry of the reaction:

1 mole of calcium hydroxide produces 2 moles of water

So, 2.70 moles of calcium hydroxide will produce = \frac{2}{1}\times 2.70=5.40mol of HCl

To calculate mass for given number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Molar mass of water = 18 g/mol

Moles of water = 5.40 moles

Putting values in above equation, we get:

5.40mol=\frac{\text{Mass of water}}{18g/mol}\\\\\text{Mass of water}=(5.40mol\times 18g/mol)=97.2g

Hence, the mass of water produced in the reaction is 97.2 grams

3 0
4 years ago
Why is pluto classified as a dwarf planet?
Julli [10]

Answer:

pluto is considered a dwarf planet because it did not meet the three criteria the IAU uses to define a full sized planet

Explanation:

5 0
3 years ago
Harry has a sample of an unknown material. The sample has a mass of 81 grams and a volume of 0.9 cubic centimeters. What is the
Salsk061 [2.6K]
Density = mass/volume
density = 81 grams/0.9 cubic centimetersdensity = 90 grams per cubic centimeter
The density of the sample is 90 grams per cubic centimeter.
8 0
3 years ago
The question is 7th grade science theres a picture of the question. please help
Oksi-84 [34.3K]

Answer:

true

Explanation:

the ocean crust is found at the edges of the ocean soooooooooooo

5 0
3 years ago
Read 2 more answers
If there are 94 different kinds of naturally occurring atoms how many different naturally occurring elements are there?
Delicious77 [7]

Answer:

118 elements

Explanation:

Of these 118 elements, 94 occur naturally on Earth.

7 0
3 years ago
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