Answer:
D. A process that breaks down large rocks into smaller pieces.
Explanation:
Physical weathering if referred to the process of rocks breaking apart without changing their chemical composition. If you look at the other answers, none of them match the description of physical weathering.
Answer:
A process that breaks down large rocks into smaller pieces.
b) a period of time when temperatures across the planet are colder than normal
c) a characteristic of summer that returns seasonally
d) the gain of heat in coastal areas from El Niño storms
Global Warming is a gradual increase in the overall temperature of the earth's atmosphere.
So, i believe the answer to your question would be a) a recent increase in the average global temperatures near Earth's surface
a
seoosososossosososososososs
0.001011 g
0.000001101 kg
0.0001011 g
For this case, the first thing we are going to do is convert all the numbers to the same unit.
For this, we use the following conversion:
1 Kg = 1000 g
We then have the following numbers:
1) 0.00001101 kg = (0.00001101) * (1000) = 0.01101 g
2) 0.001011 g
3) 0.000001101 kg = (0.000001101) * (1000) = 0.001101 g
3) 0.0001011 g
Therefore, the largest amount in grams is:
0.01101 g
Answer:
0.00001101 kg = 0.01101 g
option 1
b. Número de electrones _______________
c. Número de neutrones _______________
Answer : The concentration in mol/L is
Explanation : Given,
Moles =
Volume of solution = 500 mL
Formula used :
Now put all the given values in this formula, we get:
Therefore, the concentration in mol/L is
16 H+ (aq) + 2 Cr2O7 2-(aq) + C2H5OH (aq) ? 4 Cr3+ (aq) + 2 CO2 (g) + 11 H2O (l)
If 35.46 mL of 0.05961 M Cr2O7 2-
is required to titrate 28.00 g of plasma, what is the mass percent
of alcohol in the blood?
Answer:
0.17%
Explanation:
With the equation:
2Cr2O7 2- + C2H5OH + H2O --> 4Cr3+ + 2CO2 + 11H2O
We can assume that every mole of ethanol needs 2 moles of Dichromate to react.
So if in 1L we have 0.05961 moles of dichromate we can discover how many moles we have in 35.46mL
1000 mL - 0.05962 moles
35.46 mL - x
x =
x = 2,11* 10^-3 moles
As we said earlier, 1 mole of ethanol needs 2 mole of dichromate, so in the solution we have 1,055*10^-3 moles of ethanol. We can discover the mass of ethanol present in the solution.
1 mole - 46g
1.055*10^-3 - y
y = 46 * 1.055*10^-3
y = 0.048 g
To discover the percent of alchol we can use a simple relation
28 g - 100%
0.048 - z
z =
z = 0.17%