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Aleonysh [2.5K]
3 years ago
10

a bar of gold is melted into liquid the liquid is then poured into a mold to make pieces of jewelry is the process a chemical ch

ange or a physical change ?
Chemistry
1 answer:
Leviafan [203]3 years ago
6 0
Physical change because it's only changing the shape of the gold.
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Answer:

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540÷90=6 km/h

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2 years ago
Using the mass of a proton 1.0073 amu and assuming it's diameter is1.0x10^-15, calculate the density of a proton in g/cm^3. I'm
valkas [14]
You just have to find a conversion from amu to grams. For every 1 amu, there is 1.66×10⁻²⁴ grams. Thus,

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Since a proton is spherical in shape, the volume would be:

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4 0
3 years ago
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2 years ago
Calculate the partial pressure of phosgene that is in equilibrium with a mixture of 0. 025 atm of carbon monoxide and 0. 003 5 a
saw5 [17]
According to the reaction equation:
by using ICE table:
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change -X                 -X                +X
Equ     (0.025-X)    (0.0035-X)        X

when:
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4 0
2 years ago
How many ions that have a +1 charge will bond with an ion that has a -2 charge
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Many, srsly alot. can see in the periodic table. group 1 elements can become ions withs +1 charge while group 12 elements can become ions with -2charge
6 0
2 years ago
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