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mariarad [96]
2 years ago
7

1) Alarge doud of dust and gas spread out in a large area is

Chemistry
1 answer:
alexdok [17]2 years ago
8 0

Answer:

D. nebula

Explanation:

Hope this helps

<3

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Calculate the number of grams of nitrogen dioxide that are produced from 4 moles of nitric oxide
miv72 [106K]

Answer:

hope this help by the way found off of yahoo

Explanation:

Calculate the number of grams of nitrogen dioxide that are produced from

4 moles of nitric oxide.

2NO(g) + O2(g) -->2NO2(g)

I really need help with this... I need to know how to work it too... I can balance it out but not sure about grams...  This is it balanced out with 4 moles of nitric oxide

4NO(g) + 2O2(g) ->4NO2(g) please help and explain i want to learn this

6 0
3 years ago
If 1.38×1022 atoms of element y have a mass of 1.50 g, what is the identity of y? express your answer as a chemical symbol.
zaharov [31]
1,38×10²² = 0,138×10²³

0,138×10²³ ----- 1,5g
6,02×10²³ ------ X
X = (1.5×6,02×10²³)/0,138×10²³
X = 65,435 g/mol

It's ZINC (Zn)

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4 0
3 years ago
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What is a characteristic that can be observed or measured without changing the chemical makeup of a substance? *
olga55 [171]
The correct answer is B
4 0
3 years ago
Determine the mass, in grams, of 0.350 moles of s (1 mol of s has a mass of 32.07 g).
hram777 [196]

Answer:

11.22 gm

Explanation:

32.07 gm / mole * .350 mole = 11.22 gm

4 0
2 years ago
Calculate the pH of 1.00 X 10^-6 M HCI *​
murzikaleks [220]

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To find pH you have to do -log(concentration of H+)

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