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PSYCHO15rus [73]

3 years ago

11

A compound contains 29.27% carbon, 51.22% nitrogen, and 19.50% oxygen. What is the molecular formula if the molar mass is 570.5

grams?

1 answer:

sveta [45]3 years ago

3 0

Answer:

its either A or B most likley A if im wrong then im sorry.

Explanation:

have a wonderfull day

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For a half-reaction in an acidic solution, which substances should you add to balance the equation?

Alla [95]

The answer is a. H+ and H2O. For a half-reaction in acidic solutions, elements that are not hydrogen and oxygen are balanced first. Then we add H2O to balance oxygen atoms and we add H+ to balance the hydrogen atoms. We do the same steps for basic solutions, but we also add hydroxide ions OH- in the latter part.

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3 years ago

Why does chemistry affect all aspests of life and most natural events

miv72 [106K]

Chemistry affects all aspects of life and most natural events because all living and nonliving things are made of matter.

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4 years ago

Question 22 A VHF television station assigned to channel transmits its signal using radio waves with a frequency of . Calculate

aleksklad [387]

The question is incomplete, here is the complete question:

A VHF television station assigned to channel transmits its signal using radio waves with a frequency of 66.0 MHz. Calculate the wavelength of the radio waves. Round your answer to 3 significant digits.

Answer: The wavelength of the radio waves is 4.54 m

<u>Explanation:</u>

To calculate the wavelength of light, we use the equation:

$\lambda=\frac{c}{\nu}$

where,

$\lambda$ = wavelength of the light

c = speed of light = $3\times 10^8m/s$

$\nu$ = frequency of light = $66.0MHz=66.0\times 10^6s^{-1}$

Putting the values in above equation, we get:

$\lambda=\frac{3\times 10^8m/s}{66.0\times 10^{6}s^{-1}}=4.54m$

Hence, the wavelength of the radio waves is 4.54 m

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4 years ago

Refrigerating perishable foods affects biochemical reactions by

KATRIN_1 [288]

Answer:

The answer to your question is the first choice

Explanation:

Perishable food is food with a limited shelf life if it is not refrigerated. Also, it is considered a perishable food the one that goes bad quickly when it leaves the fridge.

Example of perishable food:

Vegetables, Fruits, Meat, Fish, Milk, Yogurt, etc.

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4 years ago

How many water molecules are produced when 5.2g O2 are reacted

gtnhenbr [62]

Answer:

Total number of water molecules produced after the reaction is 1.956×10^22 molecules of water.

Explanation:

By the reaction

H2+ 1/2 O2 → H2O

Moles of O2 = 5.2\32

⇒1 mole of O2 produce 1 mole of H2O

1 mole O2 will produce 2 mole of H2O

Therefore, 5.2\32 mole will produce ${2}\times{\frac{5.2}\times{32}}$

⇒ Molecules of H2O will be

${2}\times{\frac{5.2}{32}}$ = $\frac{x}{{6.02}\times{10^23}}$

= 1.956×10^22 moleculesof H2O.

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3 years ago