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ruslelena [56]
3 years ago
11

A geologist visits an environment to make observations. The scientist predicts that the environment will undergo secondary succe

ssion. What did the geologist likely observe in the environment to draw this conclusion? Check all that apply a
The geologist saw rocks and gravel.
b
The geologist saw cooled lava flows.
c
The geologist saw remaining soil.
d
The geologist saw a few plant species.
e
The geologist saw a few small insects.
Chemistry
2 answers:
Gelneren [198K]3 years ago
7 0

Answer:

b c and e

Explanation:

harry styles said so

kow [346]3 years ago
6 0

Answer:

b c e

Explanation:

i did it

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Consider the following reaction:
Anni [7]
<span>Consider the following reaction: 
2CH3OH(g)→2CH4(g)+O2(g)ΔH=+252.8kJ
Calculate the amount of heat transferred when 27.0g of CH3OH(g) is decomposed by this reaction at constant pressure. 

27.0 g </span>CH3OH(g) (1 mol/ 32.05g) = 0.84 mol CH3OH(g)
ΔH =+252.8kJ = Q = 0.84 mol (252.8kJ) = 213 kJ
6 0
4 years ago
Read 2 more answers
Calculate the molar solubility of silver(i) bromate with ksp = 5. 5×10-5. also, convert the molar solubility to the solubility.
Sindrei [870]

The molar solubility is 7.4×10^{-3} M and the solubility is  7.4×10^{-3} g/L .

Calculation ,

The dissociation of silver bromide is given as ,

AgBr → Ag ^{+} + Br^{-}

S  

 -          S        S        

Ksp =  [Ag ^{+} ] [ Br^{-} ]  =  [S] [ S ] = S^{2}

S = √ Ksp = √ 5. 5×10^{-5} = 7.4×10^{-3}

The solubility =7.4×10^{-3} g/L

The molar solubility is the solubility of one mole of the substance.

Since ,  one mole of AgBr is dissociates and form one mole of each  Ag ^{+} and Br^{-} ion . So, solubility is equal to molar solubility but unit is different.

Molar solubility = 7.4×10^{-3} mol/L = 7.4×10^{-3} M

To learn more about molar solubility ,

brainly.com/question/16243859

#SPJ4

7 0
1 year ago
A 15.0 mL sample of a liquid has a mass of 12.3 g. What is the density of the liquid? A. 0.820g/mL B. 1.22g/mL C. 185g/mL D. 12.
MariettaO [177]

Answer: Option A. 0.820g/mL

Explanation:

Mass = 12.3 g

Volume = 15mL

Density = Mass /volume

Density = 12.3/15 = 0.82g/mL

4 0
3 years ago
How many molecules of o2 are there in 4.0 mol of o2?
Setler79 [48]
Each and every mole of any substance = Avogadro's Number of them
= 6.023 \times  {10}^{23}  \\ 4.0moles \: O2 \times  \frac{6.023 {10}^{23}molecules }{1mole}  \\  = 2.41 \times  {10}^{24}  \: molecules \: of \: O2
5 0
3 years ago
Use the periodic table to find the molar mass of
Naddika [18.5K]

I can give you a clue of getting mass. if it is the atomic number is even multiply by 2 but if the atomic number is odd multiply by 2 and add 1

sodium atomic number = 11 so mass = 11*2 +1 = 23

oxygen. atomic number = 8 so mass = 8*2 = 16

carbon atomic number = 6 so mass = 6*2 = 12

3 0
3 years ago
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