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Ludmilka [50]
4 years ago
14

What is the percent by mass of water in the hydrate

Chemistry
1 answer:
saw5 [17]4 years ago
3 0
Whats the options? I need to see some options before I answer please if there are any..
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How many total of atoms are in 0.370gr of P2O5
Irina-Kira [14]
142 g ---------------- 6.02 x 10²³ molecules
0.920g g ------------ ( molecules )

molecules = 0.920 x ( 6.02 x 10²³ ) / 142

molecules = 5.53 x 10²³ / 142

= 3.89 x 10²¹ molecules

1 molecule P2O5 -------------------------- 7 atoms
3.89 x 10²¹ molecules -------------------- ( atoms )

atoms = ( 3.89 x 10²¹) x 7 / 1

atoms = <span>2.72 x 10²² atoms of P2O5


 Hope this helps!!!
</span>
8 0
3 years ago
What is the mass of carbon dioxide formed when 36g of carbon is burnt?<br> C+O2 -------&gt;C02
Anestetic [448]

Answer:

Mass = 132 g

Explanation:

Given data:

Mass of CO₂ formed = ?

Mass of C burnt = 36 g

Solution:

Chemical equation:

C + O₂    →    CO₂

Number of moles of carbon:

Number of moles = mass/molar mass

Number of moles = 36 g/ 12 g/mol

Number of moles = 3 mol

now we will compare the moles of carbon and carbon dioxide.

                C           :        CO₂

                 1           :         1

                3           :         3

Mass of CO₂:

Mass = number of moles × molar mass

Mass = 3 mol × 44 g/mol

Mass = 132 g

7 0
3 years ago
The match between an individual's temperament and the environmental demands with which the individual must cope is known by the
Black_prince [1.1K]

Answer:

Goodness of fit

Explanation:

The goodness of fit - it is proposed by Thomas and chess in 1977. This term is used to defined coordination of child temperament and environment. while poorness of fit defines when temperament is not accommodated.

The goodness of fit is generally good for children's best learning. it is basically related to individual temperament and their social environment

8 0
3 years ago
Read 2 more answers
PLEASE Help I will give u brainliest for if u get right.
solong [7]

Answer:

H

Explanation:

Hydrogen is a nonmetal love:)

3 0
3 years ago
Read 2 more answers
4 5 Is water an acid, alkali or neutral? Give the reason for your answer.​
Sergio039 [100]

Answer:

Acid.

Explanation:

I assume you mean 4.5?

pH below 7 is acidic

pH above 7 is alkaline

pH equal to 7 is neutral

4.5 lies below 7, so it is acidic

4 0
2 years ago
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