3 years ago

Balance the following reaction:

Chemistry

1 answer:

NeX [460]3 years ago

8 0

Answer:

3 Ca(OH)2 + 2 K3PO4 ---> Ca3(PO4)2 + 6 KOH

Explanation:

Just balance each atom on both sides.

You might be interested in

George knows that topography is continually being created and

TEA [102]

Oh oh oh alrighty auto parts AOU

8 0

3 years ago

What might happen to global atmospheric carbon levels if the polar ice caps were to melt?

kolbaska11 [484]

If the Arctic became completely ice-free and phytoplankton productivity levels were maintained, Arrigo and his colleagues calculated that the new carbon sink could in theory absorb an extra 160 million tonnes of carbon each year.

6 0

4 years ago

When a scientific theory has been tested and proved by the scientific community, it becomes a law.

suter [353]

Answer:

False

Explanation:

Because laws and theories are developed for different purposes, laws never become theories, and theories do not become laws.

4 0

2 years ago

Which of the following is the closest to the observed abundance of 71Ga, one of two stable gallium isotopes (69Ga and 71Ga). The

Marina86 [1]

You must see the mass of Gallium in the periodic table. The mass present there is calculated by a weighted average of the mass of the isotopes, where the weights are the abundances of each isotope. Let X the isotopic abundance of Ga⁷¹. Since there are only Ga⁶⁹ and Ga⁷¹, the isotopic abundance of Ga⁶⁹ is 1-X. Then:

$m(Ga)_{periodic~table}=(1-X)\cdot m(Ga^{69})+X\cdot m(Ga^{71})\\\\69.7=(1-X)\cdot69+X\cdot71\\\\ 69.723=69-69X+71X\\\\ 2X=0.723\\\\ X=0.3615\\\\ \boxed{X=36.15\%}$

I don't know the options, but probably 40% is the closest to 36.15%.

7 0

3 years ago

Which reaction occurs at the cathode of a galvanic cell that has an aluminum electrode in an electrolyte with aluminum ions and

Elena L [17]

Answer:

${ \bf{Cu {}^{2 + } + 2e \: → \: Cu }}$

6 0

3 years ago