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Ivenika [448]
3 years ago
7

What is 57.048 rounded to three significant figures?

Chemistry
1 answer:
AnnyKZ [126]3 years ago
4 0
57.0 is it rounded to three sig figs. You count three spaces then round from there, which would be the zero and you would round down because the four is there.
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Gwar [14]

Answer:

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2 years ago
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Which of these compounds hast the highest melting point <br> CCl4<br> CBr4<br> CH4<br> CF4<br> CI4
ikadub [295]

The compound CBr4 has the highest melting point of 91°C

4 0
3 years ago
What is the pOH of a<br> 5.6 x 10-5 M solution of cesium<br> hydroxide (CsOH)?
Rudiy27

Answer: 4.25

Explanation: CsOH=Cs+

pOH= -log10

= -log10(5.6*10^-5)

= -log10(5.6*10^-5)=-(-4.25)

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7 0
3 years ago
1. How many ATOMS of boron are present in 2.20 moles of boron trifluoride ? atoms of boron.
maks197457 [2]

Answer:

1. How many ATOMS of boron are present in 2.20 moles of boron trifluoride? atoms of boron.

2. How many MOLES of fluorine are present in  of boron trifluoride? moles of fluorine.​

Explanation:

The molecular formula of boron trifluoride is BF_3.

So, one mole of boron trifluoride has one mole of boron atoms.

1. The number of boron atoms in 2.20 moles of boron trifluoride is 2.20 moles.

The number of atoms in 2.20 moles of boron is:

One mole of boron has ---- 6.023x10^2^3 atoms.

Then, 2.20 moles of boron has

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2. Calculate the number of moles of BF3 in 5.35*1022 molecules.

(5.35x10^2^2 molecules/6.023x10^2^3)x 1mol\\=0.0888mol

One mole of boron trifluoride has three moles of fluorine atoms.

Hence, 0.0888moles of BF3 has 3x0.0888mol of fluorine atoms.

=0.266mol of fluorine atoms.

5 0
2 years ago
What factors mechanical weathering ?. <br><br><br> Earth Science.
OLga [1]

Answer:

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-Formation of salt crystals within the rock.

-Burrowing by animals.

those are some factors I know

hope this helped you

4 0
2 years ago
Read 2 more answers
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