Explain how energy causes changes to earths surface

Chemistry

1 answer:

dlinn [17]2 years ago

7 0

Answer:

Explanation:

The absorbed sunlight drives photosynthesis, fuels evaporation, melts snow and ice, and warms the Earth system. Solar power drives Earth's climate. Energy from the Sun heats the surface, warms the atmosphere, and powers the ocean currents.

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How many ammonium ions and how many sulfate ions are present in a 0.270 mol sample of ?

IgorLugansk [536]

<u>Answer:</u> There are $3.25188\times 10^{23}$ ammonium ions and $1.62594\times 10^{23}$ sulfate ions in the given amount of ammonium sulfate.

<u>Explanation:</u>

We are given 0.270 moles of ammonium sulfate and we need to find the number of ammonium and sulfate ions in it. The equation for the ionization of ammonium sulfate is given by the reaction:

$(NH_4)_2SO_4\rightarrow 2NH_4^++SO_4^{2-}$

By Stoichiometry,

1 mole of ammonium ions dissociates into 2 moles of ammonium ions and 1 mole of sulfate ion.

According to the mole concept:

1 mole of an ionic compound contains $6.022\times 10^{23}$ number of ions.

Hence, 0.270 mole of ammonium sulfate will contain $0.270\times 2\times 6.022\times 10^{23}=3.25188\times 10^{23}$ number of ammonium ions and $0.270\times 1\times 6.022\times 10^{23}=1.62594\times 10^{23}$ number of sulfate ions.

Hence, there are $3.25188\times 10^{23}$ ammonium ions and $1.62594\times 10^{23}$ sulfate ions in the given amount of ammonium sulfate.

5 0

3 years ago

Can someone help me please

Bess [88]

Answer:

it's d

Explanation:

I took the test and got it right

5 0

3 years ago

How many moles of hf are needed to react with 0.380 mol of na2sio3?

Aleks04 [339]

Hydrogen fluoride is a strong reactive towards $Na_{2}SiO_{3}$ which is a component of glass. Thus HF cannot keep in glass beaker or any glass made material. That is why HF is used to create mark on the glass in industrial process. The reaction between hydrogen fluoride (HF) and sodium silicate ( $Na_{2}SiO_{3}$ ) is $Na_{2}SiO_{3}$ +2HF=2NaF + Si $O_{2}$ + $H_{2}O$ . Thus 1 mole of $Na_{2}SiO_{3}$ reacts with 2 moles of HF. So, 0.380 mol of $Na_{2}SiO_{3}$ will react with (0.380×2) = 0.76 mol of HF.