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laila [671]
3 years ago
15

Elena has two magnets. She puts one under a piece of paper. She holds the other one above it. The magnets attract each other. Th

is shows that
A) magnets can attract through solid materials.
B) magnets cannot attract through solid materials.
C) magnets must be suspended in air to attract each other.
D) magnets attract when they are placed on top of each other.
Chemistry
1 answer:
Sonbull [250]3 years ago
6 0
A) Magnets can attract through solid materials.
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Read the chemical equation. N2 + 3H2 → 2NH3 Using the volume ratio, determine how many liters of NH3 is produced if 1.2 liters o
zmey [24]

Answer : The volume of NH_3 produced will be, 0.8 liters.

Explanation : Given,

Volume of H_2 = 1.2 L

At STP, 1 mole of substance contains 22.4 L volume of substance.

The given balanced chemical reaction is:

N_2+3H_2\rightarrow 2NH_3

From the balanced chemical reaction we conclude that,

As, 3\times 22.4L volume of H_2 produced 2\times 22.4L volume of NH_3

So, 1.2L volume of H_2 produced \frac{2\times 22.4L}{3\times 22.4L}\times 1.2L=0.8L volume of NH_3

Therefore, the volume of NH_3 produced will be, 0.8 liters.

5 0
3 years ago
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A fungus like the one that causes athletes foot causes disease by? A producing allergies B spreading spores c absorbing nutrient
goblinko [34]
I think the answer is B spreading spores.
6 0
3 years ago
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How hot Will a 2.3L balloon have to get to expand to a volume of 250L?
KIM [24]

it never will, it will pop

5 0
3 years ago
The boiling point of a substance is tested. After 10 tests, the result is given as 37+/−3°C. Which conclusion can be drawn from
kenny6666 [7]

From the data obtained from the tests, the actual boiling point lies between 34°C and 40°C.

The boiling point of a substance is the temperature at which the pressure of the substance becomes equal to atmospheric pressure. Pure substances have a sharp boiling point while impure substances boil over a temperature range.

In this case, the boiling point of the substance after 10 tests is obtained as 37+/−3°C. This implies that the actual boiling point lies between 34°C and 40°C.

Learn more: brainly.com/question/8646601

7 0
3 years ago
How many valence electrons are in cbr2cohnh2
marishachu [46]

Answer:

36 valence electrons

Explanation:

Given CBr₂COHNH₂ => Br₂C = C - O - H

                                                    |

                                             H - N - H

#Valence e⁻s  = 2Br + 2C + 3H + 1N + 1O = 2(7) + 2(4) + 3(1) + 1(5) + 1(6)

    = 14 + 8 + 3 + 5 + 6 = 36 valence electrons

Addendum ...

#Bonded e⁻s =  2Br + 2C + 3H + 1N + 1O = 2(8) + 2(8) + 3(2) + 1(8) + 1(8)

   = 16 + 16 + 6 + 8 + 8 = 54 bonded electrons

#Covalent Bonds = #Valence e⁻ - #Bonded e⁻ / 2 = (54 - 36) / 2 = 9 cov. bonds.

8 0
3 years ago
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