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Bas_tet [7]
3 years ago
9

An object was measured by a worker as

Chemistry
1 answer:
Alexeev081 [22]3 years ago
3 0

Answer:.633

Explanation:

I have know idea but it was right

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A mixture consists of sand and an aqueous salt
Alenkinab [10]

Answer is (4).<span>
<em>
</em>
</span>

<span><em>Explanation:</em>
</span><span>
<span>The given mixture contains an </span>insoluble solid<span> <span>and an </span></span>aqueous solution of salt.  <span>The insoluble solid is </span>sand. <span>

First </span><span>we have to separate </span>insoluble solid. <span>Sand can be separated by doing </span>filtration. When we filter the mixture sand can be seen as the residue on the filter paper. 

<span>After filtering the mixture, we should collect the </span>filtrate. <span>Filtrate is the </span>salt solution. <span>By doing </span>evaporation <span>we can get the </span>solid salt. <span>

First </span>and second choices are wrong <span>because </span>after evaporating water filtration cannot be done and salt and sand will be mixed together.<span>

Salt cannot be filtered out because the salt is soluble and it is <span>in aqueous medium. Hence, third choice is wrong</span></span></span>

7 0
3 years ago
Read 2 more answers
Can someone please please help me with the first two !!!! I really need to turn this in !!!!!
kati45 [8]

Answer:

Be Electron configuration: 1s2 2s2

Be Orbital Diagram: \//\    \//\ (it would be little arrows going up and down to show the spins)

F Electron Configuration: 1s2 2s2 2p5

F Orbital Diagram: \//\    \//\    \//\ \//\ \/

7 0
3 years ago
Please help to me solve these ! :)
emmainna [20.7K]
I. The solubility of NaCl at 25 degrees C would be between the solubilities at 20 and 30 degrees C. A reasonable answer would be 36 grams/100 g water
ii. From the table, it’s clear that the salts are more soluble at higher temperatures, indicating that an increase in temperature increases solubility.
iii. At 50 degrees C, a saturated ammonium chloride solution will have 50.6 grams of salt per 100 g water. At 20 degrees C, the solution can hold only 37.3 grams of salt per 100 g water. Thus, 13.3 grams of salt will precipitate per 100 grams of water.
4 0
3 years ago
Read 2 more answers
What element has 28 electrons when electrically neutral
muminat

Answer:

nickel

It also tells you the number of electrons that the element has in its outside shells. If the atomic number of nickel is 28 then every atom of nickel has 28 protons in its nucleus and 28 electrons outside the nucleus.

Explanation:

5 0
3 years ago
Can someone help me
exis [7]
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6 0
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