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Sergio039 [100]
3 years ago
10

B. 3.8 x 10 1.9 X 10

Chemistry
1 answer:
adell [148]3 years ago
5 0

Answer:

38

19

Explanation:

so if it's asking you to multiply by 10 corresponding to a decimal all you have to do is move the decimal point one unit to the left

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A block of aluminum occupies a volume of 15.0 cm and weighs 40.5 g. What is its density?
mafiozo [28]

Answer:

2.7 g/cm^3

Explanation:

D = m/V

D = 40.5 g / 15 cm^3

D =  2.7 g/cm^3

7 0
3 years ago
A vessel contained N2, Ar, He, and Ne. The total pressure in the vessel was 1100 torr. The partial pressures of nitrogen, argon,
geniusboy [140]

Answer:

Partial pressure Ne = 340 Torr

Option B

Explanation:

Gases contained in the vessel:

N₂, Ar, He, Ne

One of Dalton's law for gases determine this:

In a mixture of gases contained in a vessel, total pressure of the system must be the sum of partial pressure of each gas.

Total pressure = 1100 Torr

Let's replace:

Partial pressure N₂ + Partial pressure Ar + Partial pressure He + Partial pressure Ne  =  1100 Torr

Partial pressure Ne = 1100 Torr - Partial pressure N₂ - Partial pressure Ar  -Partial pressure He

Partial pressure Ne = 1100 Torr - 110 Torr - 250 Torr - 400 Torr

Partial pressure Ne = 340 Torr

8 0
3 years ago
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Illusion [34]

Answer:

H20 Covalent bond

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Explanation:

4 0
3 years ago
If the mass of a material is 75 grams and the volume of the material is 16 cm3, what would the density of the material be?
qwelly [4]
P=75/16=4.6875 g/cm³
7 0
4 years ago
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____ 46. the number of electrons present in the s orbitals in the outermost electron shell of the alkaline earth (group iia) met
myrzilka [38]
All of the group iia metals (the column with Be, Mg, Ca, etc) have an outermost s suborbital with 2 electrons 
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3 years ago
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