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zmey [24]
2 years ago
15

PLEASE ANSWER FAST AND YOU WILL GET BRAINLIESTTTTTTT!!!!!!! And POINTSSSSSS!! PLEASE ANSWER FAST AND YOU WILL GET points and BRA

INLIEST!!!!! btw answer both pleaseeeeeee

Chemistry
2 answers:
stiks02 [169]2 years ago
6 0

Answer:

B on both questions

Explanation:

shtirl [24]2 years ago
3 0

Answer:

7. B.) The transfer of energy by the movement of matter

8. B.) Divegent Boundary

Explanation:

7. Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air or molten rock.

8. The Red Sea formed due to the Arabian plate drifting away from the African plate, which makes it a Divergent Boundary. (Divergent = Move Away)

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For which compound does 0.256 mole weigh 12.8 g?
mylen [45]
Number of moles = \frac{mass (g)}{Molar mass}
so to calculate molar mass (Molecular weight of compound):
Molecular weight = \frac{mass (g)}{number of moles}
            = \frac{12.8 g}{0.256 mole} = 50 g / mole
Now we calculate molecular weight of each compound in choices:
a) C₂H₄O = 44
b) CO₂ = 44
c) CH₃Cl = 50.4 ALMOST 50  so this is the correct answer
d) C₂H₆ = 30
6 0
2 years ago
A student carries out this chemical reaction in a beaker:
nydimaria [60]

Answer:The correct answer is option (C).

Explanation:

Zn+CuCl_2\rightarrow Cu+ZnCl_2

After the reaction between Zinc and copper(II) chloride, Zinc chloride and copper will be obtained as a product. This reaction occurs because zinc is more reactive than copper which displaces the copper from its aqueous solution.

The student will expect to find copper metal at bottom of the beaker with aqueous solution of zinc chloride.

Hence the correct answer is option (C).

7 0
2 years ago
Draw the products of the complete hydrolysis of an acetal. Draw all products of the reaction.
jolli1 [7]

Answer: the product is ketone or aldehyde

Explanation:

The first step is the conversion of acetal to hemiacetal in the presence of H3O+/ ROH, and then the final conversion of hemiacetal to ketone/aldehyde using

H3O+/ ROH...

Attached is the structural conversion

8 0
3 years ago
How would your atomic mass prediction have been affected if not all of the water had been evaporated from the calcium carbonate
Yanka [14]
Go to a famlie member, if you can't trust them, trust god. if you cant trust god, BURN IN HELL
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Based on the nebular Theory, which of these is a step in the formation of a new planetary system?
never [62]
A. evaporation of water
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2 years ago
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