3 years ago

Is gold amalgamation a chemical reaction with gold and mercury?

Chemistry

1 answer:

iren [92.7K]3 years ago

4 0

Answer:

gold amalgamation is the mixing of gold and Mercury.

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Need the names for these asap please

jeyben [28]

Answer:

3_ethylpentane

4_ethylheptane

1_pentene

3_hexene

5 0

2 years ago

A single replacement reaction is a reaction in which one element replaces a similar element within a compound. True or false?

AleksAgata [21]

Answer:

true

Explanation:

A single replacement reaction is a reaction that an element is displaced with another element in a compound

A+BC------AC+B

Mg+2HCl-------MgCl2+H2

8 0

3 years ago

Carbon-14 has a half-life of 5,700 years.

Maksim231197 [3]

Answer:

$3.106\ \text{g}$

Explanation:

$t_{1/2}$ = Half-life of carbon = 5700 years

t = Time at which the remaining mass is to be found = 10400 years

$m_0$ = Initial mass of carbon = 11 g

Decay constant is given by

$\lambda=\dfrac{\ln2}{t_{1/2}}$

Amount of mass remaining is given by

$m=m_0e^{-\lambda t}\\\Rightarrow m=m_0e^{-\dfrac{\ln2}{t_{1/2}} t}\\\Rightarrow m=11e^{-\dfrac{\ln 2}{5700}\times 10400}\\\Rightarrow m=3.106\ \text{g}$

The amount of the substance that remains after 10400 years is $3.106\ \text{g}$ .

5 0

2 years ago

One gram of carbon contains 50,200,000,000,000,000,000,000 atoms. express the number of carbon atoms in scientific notation

german

N(C)=5,02·10²² atoms

calculation check:

N(C)=(1/12)*6.022*10²³=0.5018*10²³≈5.02·10²²

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2 years ago

which change in the temperature of the one gram sample of water would cause the greatest increase in average kinetic energy of i

LenaWriter [7]

Maybe about in the 50ths

8 0

3 years ago