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wlad13 [49]
3 years ago
15

HELP ASAP PLEASE!

Chemistry
1 answer:
trasher [3.6K]3 years ago
4 0

i think the answer is d not sure tho tried to help the best i can if not d than it is c sorry bout that

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A chemist heats a sample of hydrated lithium nitrate which weighs 170 grams and finds, after heating that it weighs 95.3 grams.
Agata [3.3K]

Explanation:

170-95.3 = 74.7

that means

74.7% of water in hydrate

7 0
3 years ago
Describe why the periodic table needed to be reordered in 1913.
Norma-Jean [14]

Answer:

1913. Henry Moseley determined the atomic number of each of the known elements. He realized that, if the elements were arranged in order of increasing atomic number rather than atomic weight, they gave a better fit within the 'periodic table'.

Explanation:

GOO

7 0
2 years ago
If a solution containing 51.429 g of mercury(ii) perchlorate is allowed to react completely with a solution containing 16.642 g
OLga [1]
Hg(No3)2  +NaSO4   --->2NaNO3  +  HgSO4(s)
calculate  the moles  of   each  reactant
moles=mass/molar  mass

moles of  Hg(NO3)2=  51.429g/  324.6  g/mol(molar  mass  of  Hg(NO3)2)=0.158  moles

moles Na2SO4  16.642g/142g/mol=  0.117  moles  of  Na2SO4

Na2SO4  is  the  limiting  reagent in  the   equation   and  by  use  mole  ratio  Na2So4  to  HgSO4  is  1:1   therefore  the  moles  of  HgSO4  =0.117  moles

mass  of  HgSO4=moles  x  molar   mass  of  HgSo4=  0.117 g x  303.6g/mol=  35.5212  grams

7 0
3 years ago
The periodic law states that the physical and chemical properties of elements are periodic functions of their?
svetoff [14.1K]
<span>The periodic law states that the physical and chemical properties of elements are periodic functions of their "Atomic Numbers"

So, option B is your answer.

Hope this helps!
</span>
6 0
3 years ago
Will name brainliest
aliina [53]
<h3>Answer:</h3>

c=54

Explanation:

6•c/6= 6•9

c=6•9

c=54

6 0
2 years ago
Read 2 more answers
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