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blagie [28]
3 years ago
7

How many significant figures are in the number 4.02 x 10^-9 ?

Chemistry
2 answers:
umka21 [38]3 years ago
6 0
3 cuz I’m smart and I know everything:)
Stolb23 [73]3 years ago
4 0

Answer:

3 sig figs

Explanation:

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Jimmy applied the distributive property to write the equation below.
damaskus [11]

Answer:

Jimmy wrote two expressions that are not equivalent

Explanation:

24+6=30 while 6(4+2) equals 36 because if you distribute the 6 to 4 (which equals 24) then the 6 to 2 (which equals 12) and add 24 and 12 together, you get 36. So, 24+6  =/= 6(4+2). Hopefully this is correct!

3 0
3 years ago
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What does the symbol H stand for
muminat

Answer:

enthalpy

Explanation:

If it is used with a triangle in front, (delta H), that means the change in enthalpy. Delta H= (m)(s)(Delta T).  m=mass of products, s=heat of the products, Delta T = change in temperature.

Hope that helps

4 0
3 years ago
What is the mass of water that results from combining 2.0 g of hydrogen with 16.0 g of oxygen?
astraxan [27]
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The answer is D.

Hope this helps :) ~
8 0
3 years ago
How are mass and weight related to gravitational force
scoundrel [369]

Answer:

Mass is Universal and weight is tied to the strength of the gravitational force of the planet .

Explanation:

The reason is because without mass you have no weight witch means if you have a certain amount of mass you will have a certain weight .

5 0
3 years ago
Nitric acid with a concentration of 1mol/dm has a pH
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Water is neutral with ph 7. when we add water to acidic solution, it will be less acidic. so the pH of acid increases
6 0
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