All categories

4 years ago

QUESTION 2

Chemistry

2 answers:

zvonat [6]4 years ago

8 0

Sand dunes: These are small hills made up of lose sand.

During formation of dunes ( in deserts or sea shores) there is creeping of sand particles along one side and there is sliding of sand on other side resulting in formation of a dune.

Thus the agent causes sand dunes to form is the wind carries the sand until it runs into an obstacle

adell [148]4 years ago

5 0

The answer to your question would be:: the wind because it carries the sand until it runs into an obstacle

You might be interested in

You will mostly find me in solid form at room temperature.

AlexFokin [52]

Nonmetal is the correct answer

5 0

3 years ago

Write the name for the IONIC compound that contains two aluminum atoms and three sulfur atoms. (Need help ASAP)

Arada [10]

Ionic compound
Al +3 charge, Aluminum
S -2 charge, Sulfur

Al2S3

6 0

3 years ago

Are you sure it’s d<br> Plz tell me

Virty [35]

Answer:

? which question

Explanation:

8 0

3 years ago

Calculate the pH of the resulting solution if 32.0 mL of 0.320 M HCl(aq) is added to (a) 42.0 mL of 0.320 M NaOH(aq). (b) 22.0 m

monitta

Answer:

a) pH = 11.5

b) pH= 3

Explanation:

a) lets calculate the number of moles of each reactant

moles of HCl = 32/1000 * 0.32 = 0.01024 mole

moles of NaOH = 42/1000 * 0.32 = 0.01344 moles

1 moles of HCl reacts with 1 moles of NaOH , so 0.01024 mole of HCl should react with 0.01024 moles of NaOH , but there is some excess NaOH.

excess NaOH= 0.01344 -0.01024 = 0.0032 moles

[H+]= $\frac{10^{-14} }{0.0032} = 3.125 *10^{-12}$

pH= -log [3.125*10^-12) = 11.5

b) moles of NaOH = 0.00924

excess HCl present = 0.01024 - 0.00924 =.001

so excess [H+] = 0.001

pH= -log( 0.001) = 3

3 0

3 years ago

What do we call the lines around the nucleus of an atom?

nasty-shy [4]

Explanation:

As you know, electrons are always moving. They spin very quickly around the nucleus of an atom. As the electrons zip around, they can move in any direction, as long as they stay in their shell. Any direction you can imagine — upwards, downwards, or sidewards — electrons can do it. Electrons are constantly spinning in those atomic shells and those shells, or orbitals, are specific distances from the nucleus. If you are an electron in the first shell, you are always closer to the nucleus than the electrons in the second shell.

4 0

3 years ago

Read 2 more answers