All categories

3 years ago

SOMEONE PLEASE HELP ME WITH THIS QUESTION!!!!!!!!!!!!

Chemistry

1 answer:

Advocard [28]3 years ago

8 0

Answer:

KOH

Explanation:

Chemical reaction:

2K + 2H₂O → 2KOH + H₂

Element ratio of K.

K = 1

Because only potassium is present.

Element ratio of H₂O.

2 : 1

in water ratio of element is 2 : 1 because two hydrogen and one oxygen atom present.

Element ratio of KOH

1 : 1 : 1

in KOH elemental ratio is 1 : 1 : 1 because one potassium one hydrogen and one oxygen atom are present.

Element ratio of H₂.

Just two atoms of hydrogen are present.

You might be interested in

PLS HELP ASAP i really need an answer a correct one

nata0808 [166]

Answer: 67.23 L

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Putting in the values we get:

$\text{Number of moles of methane}=\frac{48g}{16g/mol}=3moles$

1 mole of methane occupies = 22.4 L

Thus 3 moles of methane occupy = $\frac{22.4}{1}\times 3=67.23L$

Thus volume of 48 grams of methane gas is 67.23 L

6 0

3 years ago

How sedimentary rock is formed

Shkiper50 [21]

Sedimentary rocks are formed from deposits of pre-existing rocks or pieces of once-living organism that accumulate on the Earth's surface. If sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock

hope this helps

8 0

3 years ago

Read 2 more answers

The equation that describes the process of photosynthesis

Alexandra [31]

The last choice is the equation for photosynthesis

7 0

3 years ago

Read 2 more answers

In an electron dot diagram of fluorine , how many dots should be drawn around the elements symbol

Irina18 [472]

Answer:

7 dots

Explanation:

8 0

3 years ago

Balance the following equation <br><br><br> _NaOH (aq) + _HNO3 (aq)> _NaNO3 (aq)+ _H2O (1)

Vlada [557]

Its already balanced, no balancing required

6 0

3 years ago