3 years ago

1. Which type of telescope is most useful for detecting a star that emits very long

1 answer:

5 0

Which type of telescope is most useful for detecting a star that emits very long electromagnetic waves?

A. a radio telescope B. an X-ray telescope C. an optical telescope D. a gamma ray telescope
A.)a radio telescope

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ANSWER ASAP

Aleksandr-060686 [28]

Answer:

4 orbits in the fourth period.

19 electrons in the atom from group 1 and fourth period.

Explanation:

Potassium has 19 electrons distributed in its 4 orbits

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2 years ago

In process in which An animal's cells use oxygen and digested food molecules to release the energy in food is called

mamaluj [8]

In process in which An animal's cells use oxygen and digested food molecules to release the energy in food is called

cellular respiration

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3 years ago

Read 2 more answers

2Na(s) + 2H,O(l) — 2NaOH(?) + H, (g)<br> 0 what is the missing symbol

Klio2033 [76]

Answer:

the symbol that is missing might be 2.

Explanation:

I am not 100% on this, so correct me if I am wrong.

3 0

2 years ago

A compound is found to contain 38.65 % carbon, 16.25 % hydrogen, and 45.09 % nitrogen by mass. what is the empirical formula for

iren [92.7K]

The molar mass of carbon is 12, hydrogen is 1, and nitrogen is 14, hence the ratio are:

C = 38.65 / 12 = 3.22

H = 16.25 / 1 = 16.25

N = 45.09 / 14 = 3.22

Divide the three by the lowest ratio which is 3.22:

C = 3.22 / 3.22 = 1

H = 16.25 / 3.22 = 5

N = 3.22 / 3.22 = 1

So the empirical formula is:

CHN

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3 years ago

How many moles of NH3 can be produced from 30.0 mol of H2 and excess N2?

VMariaS [17]

20 mol of NH, can be produce from 30 mol o H2

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3 years ago