3 years ago

Not able to be separated by physical means but is chemical what is it

1 answer:

8 0

My science text book said that it was either diamond or gold. Gold may not be right, but I am pretty sure diamond is.

Sorry if I got this wrong.

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How does organic matter help soil?

sergeinik [125]

Answer:

Explanation:

the rain does help the soli it can make bacteria

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2 years ago

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The rate of disappearance of hbr in the gas phase reaction 2hbr(g)?h2(g)+br2(g) is 0.160 m s-1 at 150°c. the rate of appearance

luda_lava [24]

The reaction rates of the substances whether disappearance of a reactant or the appearance of a product are related to each other by the chemical reaction. The reaction rates are related as follows:

rate = rHBr / 2 = rBr2 = rH2

rH2 = 0.160 / 2 = 0.08 M/s

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3 years ago

A student performing this experiment weights out 0.6680 grams of an antacid tablet. It is was determined that this tablet contai

Rufina [12.5K]

Answer:

63 wt%

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3 years ago

Whether or not the process is observed in nature, which of the following could account for the transformation of gallium-67 to z

Sonja [21]

Answer:

Option a: positron emission.

Explanation:

In the transformation we have:

⁶⁷Ga → ⁶⁷Zn

The reaction is:

$^{67}_{Z}X \rightarrow ^{67}_{Z -1}Y$

For Ga to become Zn, the atom nucleus has to lose a proton, so in the given options, the reaction that involves the transformation of a proton is the option a, positron emission.

In a positron emission, a proton becomes into a neutron and a positron:

$^{A}_{Z}X \rightarrow ^{A}_{Z-1}Y + ^{0}_{+1}e$

Therefore, the correct answer is option a: positron emission.

I hope it helps you!

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3 years ago

In Experiment #6 you learned that Zn will dissolve in acidic aqueous solutions as Zn2+, but Cu will not dissolve because Cu is l

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Answer:family fdhdfgfdsh

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