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Lena [83]
4 years ago
6

100 POINTS ANSWER FAST

Chemistry
2 answers:
Alla [95]4 years ago
5 0
100 POINTS ANSWER FASTKatie traveled southwest a distance of 4000m on a bicycle in 5400s. What is her velocity? (velocity = change in distance / change in time)

A.074m/s 
alex41 [277]4 years ago
5 0

nnnnnnnnnnnnnnnnnnnnnnnnnnnooooooooooooooooooooooooooooooooo

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As the atomic number increases, the number of _ _, too.
Morgarella [4.7K]

Answer:

Protons

Explanation:

The atomic number represents the number of protons. Therefore, as the atomic number increases, the number of protons does too.

I hope this helps! :)

8 0
3 years ago
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Lewis is making a model of the Earth-Moon system. He knows that the diameter of the Earth is about four times greater than the d
Leno4ka [110]
D. this is the correct answer because the question is showing a comparison of sizes rather than the actual sizes which eliminates B. A and C have no relevance.
3 0
3 years ago
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Please help!!
Olegator [25]
Molarity =  Moles/Liter

Use the molecular atomic mass of NaCl to convert from grams to moles.
Molecular mass of NaCl is the sum of its atomic masses. Look at the periodic table to find these. Na is 23 g/mol and Cl is 35.5 g/mol ,
so NaCl = 23 + 35.5 = 58.5 g/mol

multiply to cancel out grams
76 g NaCl * (1mol / 58.5 g NaCl) = 1.3 mol NaCl

over 1 Liter is just 1.3 M NaCl
Hope this helps!
8 0
4 years ago
____________ tautomers have a C=O and an additional C-H bond.
Roman55 [17]

Ch = sh = why and find the stuff

4 0
4 years ago
A student listed three ways to predict if a bond is ionic.
natka813 [3]
1 and 3 only because metal are easily to loss electron while non metal are difficult to loss electron that's why it called heavy elements.
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