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Inessa [10]
3 years ago
5

Which elements are metalloids ? Check all that apply

Chemistry
1 answer:
Degger [83]3 years ago
8 0

Answer:

here is definition with example

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stira [4]
308 I think? Idek tbh because I hated chemistry
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2 years ago
Frank has a sample of steel that weighs 80 grams. If the density of his sample of steel is 8 g/cm3, what is the sample’s volume?
IRINA_888 [86]
Density (p) is defined as the mass (m) per unit volume (v) or:

p = m/v 

Using this relationship, the volume is:

v = m/p

Using the given values of mass of 80 grams and density of 8 g/cm3, the sample volume is:

v = 80 grams/8 grams/cm3
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The final answer is 10 cm3.
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Write the electron configuration of the element that has Z = 3 *
Natasha2012 [34]

Answer:

1s²2s^1

Explanation:

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2 years ago
Assume that the reaction of aqueous hydrobromic acid solution and potassium hydroxide base undergoes a complete neutralization r
Tamiku [17]

Answer:

a.

HBr + KOH → KBr + H  _{2} O

b.

1000 \: ml \: contains \: 0.685 \: moles \\ 55.4 \: ml \: contains \: ( \frac{55.4 \times 0.685}{1000} ) \\  = 0.038 \:moles \\ 1 \: mole \: of \: hydrobromic \: acid  \: produces \: 1 \: mole \: of \: water \\ 0.038 \: moles \: produce \: (0.038 \times 1) \\  = 0.038 \: moles \\ 1 \: mole \: of \: water \: weighs \: 18 \: g \\ 0.038 \: moles \: weighs \: (0.038 \times 18) \: g \\  = 0.684 \: g

c.

0.042 M

d.

1.4

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What is quantitative and qualitative
jenyasd209 [6]
Quantitative is a description in numbers , and qualitative is a description with words
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