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vivado [14]
3 years ago
13

1. During an endothermic chemical reaction, a gas is consumed and a liquid produced.

Chemistry
1 answer:
tino4ka555 [31]3 years ago
8 0
1. No
2.No
I hope this helps:)
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A wave has an energy of 1.5x10^3 J. Find its wavelength?
weqwewe [10]

Answer:

1.3 × 10⁻²⁸ m

Explanation:

The equation relating the energy (<em>E</em>) and the wavelength (λ) of a wave is  

E =\frac{hc}{\lambda}

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\lambda =\frac{6.626 \times 10^{-34}\text{ J}\cdot \text{s} \times 2.998 \times 10^{8} \text{ m} \cdot \text{s}^{-1}}{1.5 \times 10^{3} \text{ J}} = 1.3 \times 10^{-28}\text{ m}

5 0
3 years ago
The standard unit for concentration, Molarity (M) can also be written as?
emmasim [6.3K]

mole is the standardized form of molarity

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3 years ago
Select all of the items that are true about a sample of water vapor at 101°C as it cools.
zloy xaker [14]

Answer:

D. Its temperature will remain 100 C until all the vapours condenses

Explanation:

Heat absorbed by a substance to change the state of matter is known as latent heat. This heat is utilized to break the bonds between atoms of the substance so that they can undergo phase change.

So, when water boils at 100 degree Celsius then temperature will remain constant unless and until all the water changes into vapor. As it is the latent heat that breaks the bonds between hydrogen and oxygen atoms of water so that liquid state can change into gaseous state.

Since latent heat is a hidden heat, that is why, it does not get reflected and there is no change in temperature due to it.

Thus, we can conclude that it is true that temperature will remain at 100°C until all the vapor condenses for a sample of water vapor at 101°C as it cools.

5 0
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Which statement describes the relative masses of two different particles?
garik1379 [7]
The answer is 2. Beta particle is high energy electrons which is the same mass as positron with little mass. Alpha particle consists of 2 neutrons and 2 protons. Neutrons and protons have almost same mass which is much larger than electrons.
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Hydrogen bonds within liquid water are attractions between protons and hydroxide ions. are dipole-dipole attractions. are ion-in
barxatty [35]

Answer:

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