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Rom4ik [11]
3 years ago
7

PLEASE HELP ME ASAP I WILL MARK BRAINLEST AND WILL GIVE 5 EXTRA POINTS

Chemistry
2 answers:
sveta [45]3 years ago
6 0
It makes it poor and soft and it makes the dirt to make holes and to make the soil fall so you would need to riches the soil or water it
blondinia [14]3 years ago
3 0

Answer:One of the primary reasons that plants need pore space is because oxygen gets stored in the pores. ... Plants absorb water more efficiently when the soil is aerated.

Explanation:

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The density of acetonitrile (CH3CN) is 0.786 g/mL, and the density of methanol (CH3OH) is 0.791 g/mL. A solution is made by diss
ololo11 [35]

Answer:

The answer to your question is  0.22

Explanation:

Data

Acetonitrile (CH₃CN) density = 0.786 g/ml

Methanol (CH₃OH) density = 0.791 g/ml

Volume of CH₃OH = 22 ml

Volume of CH₃CN = 98.4 ml

Process

1.- Calculate the mass of Acetonitrile and the mass of Methanol

density = mass/ volume

mass = density x volume

Acetonitrile

        mass = 0.786 x 98.4

                  = 77.34 g

Methanol

        mass = 0.791 x 22

                  = 17.40 g

2.- Calculate the moles of the reactants

Acetonitrile molar mass = (12 x 2) + (14 x 1) + (3 x 1)

                                        = 24 + 14 + 3

                                        = 41 g

Methanol molar mass = (12 x 1) + (4 x 1) + (16 x 1)

                                      = 12 + 4 + 16

                                      = 32 g

Moles of Acetonitrile

                     41 g ----------------- 1 mol

                      77.34g ------------  x

                      x = (77.34 x 1) / 41

                      x = 1.89 moles

Moles of Methanol

                      32 g -------------- 1 mol

                       17.40 g ---------  x

                       x = (17.40 x 1)/32

                       x = 0.54 moles

3.- Calculate the mole fraction of Methanol

Total number of moles = 1.89 + 0.54

                                       = 2.43

Mole fraction = moles of Methanol / total number of moles

Mole fraction = 0.54/ 2.43

Mole fraction = 0.22  

6 0
4 years ago
______ reactions generate thermal energy in a nuclear power plant as water is changed into steam
Jet001 [13]
Fission reactions generate thermal energy
8 0
3 years ago
Read 2 more answers
Steve, Sarah, Richard, and Kate each run paper chromatography on unknown liquids. Steve gets a red band, Sarah gets a yellow ban
sladkih [1.3K]
Steve, Sarah, Richard, and Kate each run paper chromatography on unknown liquids. Steve gets a red band, Sarah gets a yellow band, Richard gets a greenband, and Kate gets a yellow band and a blue band. 

I am pretty sure it would be Kate since she got 2 different colored bands.

4 0
4 years ago
Read 2 more answers
Rx: Codeine phosphate 30 mg/tsp Tussin syrup 30mL Elixophyllin qs 240 mL Sig: 5mL qid pc hs If 5 mL of Tussin syrup contains 100
kotykmax [81]

Answer:

50 mg.

Explanation:

From the prescription, 240 ml amount is to be prepared containing 30 ml tussin syrup. As the frequency is 5 mL qid, it means 5mL of syrup is to be administered four times daily i.e. 20 mL daily. To calculate the amount of tussin taken daily,

<em>                          </em><em><u>30 mL tussin</u></em><em> = </em><em><u>X mL of tussin</u></em>

<em>                     240 mL solution    20ml solution</em>

⇒ 2.5 mL of tussin

5 ml tussin contains 100mg guafenesin,

So,

⇒ 2.5 ml of tussin contains 100x2.5/5 = 50 mg guaifenesin

4 0
3 years ago
Either my mother on
Fed [463]

Answer:

Both

Explanation:

It should be

Either my mother or my father is coming to the meeting.

5 0
3 years ago
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