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zlopas [31]
2 years ago
6

Hello guys what is good! What are all the elements of the P block?

Chemistry
1 answer:
Ghella [55]2 years ago
6 0

boron, carbon, nitrogen, oxygen and flourine families in addition to the noble gases.

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also to answer the 'hello guys what is good!':nothin u?

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find the volume of an item using a scale and waterA crown made of alloy of gold and silver has a volume of 60cm3and mass of 1050
KiRa [710]

Answer:

The mass of gold in crown is 960.61 g.And  the volume of gold is 49.77 cm^3.

Explanation:

Density is defined as mass of the substance present in unit volume of the substance.

Mass of gold in an alloy of crown= m

Mass of silver in an alloy of crown = M

Volume  gold in an alloy of crown= v

Volume of silver in an alloy of crown = V

Density of gold = 19.3 g/cm^3

Density of silver = 10.5 g/cm^3

Volume of the crown = 60 cm^3

60 cm^3=v+V

60 cm^3=\frac{m}{19.3 g/cm^3}+\frac{M}{10.5 g/cm^3}..(1)

Mass of eh crown = 1050 g

1050g =m+M..(2)

Solving equation (1) and (2):

m = 960.61 g

M = 89.39 g

Volume of the gold = v = \frac{960.61 g}{19.3 g/cm^3}=49.77 cm^3

Volume of silver = V = 60 cm^3-v=60 cm63-49.77 cm63=10.23 cm^3

The mass of gold in crown is 960.61 g.And  the volume of gold is 49.77 cm^3.

4 0
3 years ago
Water is heated to boiling and water vapor (steam) is released. Chemical change or physical change?
Vlad [161]
Physical because it is still H2O
6 0
3 years ago
During ______ the composition of a substance does not change
nignag [31]
During the Physical changes
6 0
3 years ago
What happens if you cross a heterozygous organism with a heterozygous organism?
maw [93]
If you cross a heterozygous organism with another heterozygous organism, pair two Tt and Tt. Below is a punnet square to show the result:

      T     t
T   TT   Tt
t    Tt     tt

This means that you have two heterozygous recessive and one homogenous dominant and one homogenous recessive. 
5 0
3 years ago
Which expression can be used to calculate the density of a 129.5-gram sample of bronze that has a volume of 14.8 cubic centimete
PilotLPTM [1.2K]

Answer:

it would be like 30

Explanation:

just divide the gram by cubic

5 0
2 years ago
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