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3 years ago

1 reason to be grateful about school food

Chemistry

2 answers:

Stolb23 [73]3 years ago

5 0

Answer:

Even though it tastes horrible, its still there so you don't go hungry.

OR if you want to be more sophisticated about it you could put...

One reason I am grateful about school food is because it is there so I don't go hungry.

Explanation:

Hope this helps :)

guajiro [1.7K]3 years ago

3 0

Answer:

to give something to that kid to eat

Explanation:

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Which of the following types of electromagnetic radiation have higher frequencies than visible light and which have shorter freq

natta225 [31]

Answer:

Higher frequency than visible light - Ultraviolet light, X-rays, and Gamma rays

Lower frequency than visible light - Infrared radiation, microwaves, and Radio waves

Explanation:

The frequencies of electromagnetic radiations vary according to their wavelengths. The relationship between the frequency and wavelength of the waves is expressed such that:

λ = c/f, where λ = wavelength, c = speed of light, and f = frequency.

Thus, there is an inverse relationship between the wavelength and the frequency of electromagnetic waves.

The order of the electromagnetic waves based on their frequency from the lowest to the highest is radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma-rays

Hence, electromagnetic waves with higher frequencies than visible light include ultraviolet light, X-rays, and Gamma rays while those with lower frequencies include Infrared radiation, microwaves, and Radio waves.

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3 years ago

Why does Beryllium have a larger first Ionization energy than boron?

Nata [24]

This is an exception to the general electronegativity trend. It can be explained by looking at the electron configurations of both elements.

Be:[He]2s2
B:[He]2s22p1

When you remove an electron from beryllium, you are taking away an electron from the 2s orbital. When you remove an electron from boron, you are taking an electron from the 2p orbital. The 2p electrons have more energy than the 2s, so it is easier to remove them as they can more strongly resist the effective nuclear charge of the nucleus.

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3 years ago

What is the pOH of 0.5 M KOH?

jenyasd209 [6]

Answer:

pOH = 0.3

Explanation:

As KOH is a strong base, the molar concentration of OH⁻ is equal to the molar concentration of the solution. That means that in this case:

[OH⁻] = 0.5 M

With that information in mind we can calculate the pOH by using the following formula:

pOH = -log[OH⁻]

pOH = -log(0.5)

pOH = 0.3

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gladu [14]

It means it’s neutrally charged! Protons are positive while electrons are negative, so they balance each other out. Neutrons are neutral so they don’t weigh in.

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3 years ago

Which Pair Of Compounds Are Isomers?

ruslelena [56]

The Pair Of Compounds that Are Isomers are CH3COCH3 and CH3CH2CHO. The answer is number 4. Isomers have the same formula but different structures. In number 4, both compounds contains three carbon atoms, one oxygen and 6 hydrogen atoms that makes them isomers.

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3 years ago

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