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mr Goodwill [35]
2 years ago
15

At what temperature (Celsius) will water change from a liquid to solid?

Chemistry
2 answers:
Allisa [31]2 years ago
8 0

Answer:

Water changes from a liquid to a solid at 0° Celsius

fiasKO [112]2 years ago
6 0

Answer:

0 degrees Celsius

Explanation:

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Balloon A started with a volume of 1.76 L. The temperature of the room the balloon was in was 295 K. The balloon was heated to a
valentina_108 [34]

Answer:

V₂ = 1.5 L

Explanation:

Given data:

Initial volume of balloon = 1.76 L

Initial temperature = 295 K

Final temperature = 253.15 K

Final volume = ?

Solution:

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 1.76 L ×253.15 K / 295 K

V₂ = 445.54 L.K /295 K

V₂ = 1.5 L

4 0
3 years ago
What mass of F2 is needed to produce 180 g of PF3 if the reaction has a 78.1% yield?
nexus9112 [7]

Answer:

91.26 g

Explanation:

Given data:

Mass of PF₃ = 180 g

Mass of F₂ required = ?

Solution:

Chemical equation:

P₄ + 6F₂   → 4PF₃

Moles of PF₃:

Number of moles = mass/ molar mass

Number of moles = 180 g/ 88 g/mol

Number of moles = 2.05 mol

Now we will compare the moles of PF₃ with F₂.

                        PF₃            :           F₂

                          4               :           6

                          2.05         :           6/4×2.05 = 3.075

Mass of  F₂:

Mass of F₂ = moles × molar mass

Mass of F₂ = 3.075 mol × 38 g/mol

Mass of F₂ =  116.85 g

If reaction yield is 78.1%:

116.85 /100 ×78.1 = 91.26 g

6 0
3 years ago
Which product of respiration is used for tissue repair and cellular function?
I am Lyosha [343]

Answer:

carbon dioxide

Explanation:remember to make mi brainliest

8 0
3 years ago
Read 2 more answers
A) 24 g<br> B) 36 g<br> C) 48 g<br> D) 60 g
allsm [11]

Answer: b 36 g

Explanation:

8 0
3 years ago
The chemical formula for magnesium oxide is 2MgO. The number 2 represents the number of ___.
Korvikt [17]

Answer:

magnesium oxide molecules

Explanation:

this is because the two is before the formula of MgO

7 0
3 years ago
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