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Nonamiya [84]
3 years ago
10

What energy transformation occur when wood is burned

Chemistry
1 answer:
kati45 [8]3 years ago
5 0
C. Chemical energy transforms into thermal energy and light energy.

The reason why this is the answer is because thermal energy and heat energy are basically the same things, so D is wrong. Another reason why is because the wood wasn't on fire to begin with so it cant be A. The final reason is that wood cannot create electricity. 
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How many liters of 1.75 M solution could be made using 35 grams of NaCl?
dolphi86 [110]
Data:
M (molarity) = 1.75 M (mol/L)
m (mass) = 35 g
MM (molar Mass) of NaCl = 58.44 g/mol
V (volume) = ? (in liters)

Formula:
M =  \frac{m}{MM*V}

Solving:
M = \frac{m}{MM*V}
1.75 =  \frac{35}{58.44*V}
1.75*58.44V = 35
102.27V = 35
V =  \frac{35}{102.27}
\boxed{\boxed{V \approx 0.34\:L}}\end{array}}\qquad\quad\checkmark
3 0
3 years ago
Calculate the molarity of the solution.
Ainat [17]
Molarity = moles of solution/ liter of solution
4.32x10^2/20
432/20=
21.6 M
4 0
3 years ago
Read 2 more answers
Be sure to answer all parts. find the molar solubility of bacro4 (ksp= 2.1 × 10−10) in (a) pure water × 10 m (b) 1.6 × 10−3 m na
Vlad [161]
A) in pure water :

by using ICE table:

According to the reaction equation:

            BaCrO4(s)    →  Ba^2+(aq)    +   CrO4^2-(aq)

initial                               0                          0

change                          +X                       +X 

Equ                                  X                         X


when Ksp = [Ba^2+][CrO4^2-]

by substitution:

2.1 x 10^-10 = X* X

∴X = √2.1 x 10*-10

∴X = 1.4 x 10^-5

∴ the solubility = X = 1.4 X 10^-5

B) In 1.6 x 10^-3 m Na2CrO4

 by using ICE table:

According to the reaction equation:

            BaCrO4(s)  →  Ba^2+(aq)    +   CrO4^2-(aq)

initial                                 0                      0.0016

Change                           +X                      +X

Equ                                   X                      X+0.0016

when Ksp = [Ba^2+][CrO4^2-]

by substitution:

2.1 x 10^-10 = X*(X+0.0016) by solving for X 

∴ X = 1.3 x 10^-7

∴ solubility =X = 1.3 x 10^-7

3 0
3 years ago
2. How many mi hr is 30km/s?​
dalvyx [7]

The answer is 67 108.0888km/s.

4 0
3 years ago
Explain how you will seprate a mixture gari and sugar​
Karo-lina-s [1.5K]

Answer:

The sugar would dissolve in water. You could then pour off the solution and wash the remaining sand with a bit more water. Heat the water to evaporate it from the sugar, and the two are separated.

Explanation:

please mark me brainliest and follow me.

4 0
3 years ago
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