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Readme [11.4K]
3 years ago
11

Which of the following statements about tolerance range is true?

Chemistry
1 answer:
vovikov84 [41]3 years ago
6 0
A. Tolerance range is different for different organisms.
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Lithium bromide is a(n) ___________.
bija089 [108]

Answer:

Ionic compound

Explanation:

Lithium gives away an electron and Bromine takes an electron

Hope this helps! :)

5 0
3 years ago
An astronaut is free-floating in space near a space station and it is not tethered to anything. He has some tools and a fire ext
worty [1.4K]

Hey there

the answers are

A.

and

D. He could spray the fire extinguisher in the opposite direction of the space station


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7 0
3 years ago
Read 2 more answers
A water sample has a pH of 8.2 and a bicarbonate concentration of 97 mg/L. What is the alkalinity of the sample in moles/L and i
goldfiish [28.3K]

Answer:6.94

Explanation:

Molar mass of CaCO3=40+12+16×3

=40+12+48=100g/mol

Moles=mass of substance/molar mass

=97mg/100g=0.097/100=0.00097moles/L.

PH=-log[CaCo3]=-log(0.00097)=6.94

P.s it's log to base e

3 0
3 years ago
Needed help plzzz on this chemistry homework.
mrs_skeptik [129]
Hertz is units for frequency. (waves per second)
wavelength = speed/frequency

if you're given the speed use that to calculate, if not then you can probably assume it's a wave of light and use the speed of light (3x10^8 m/s) to calculate.

wavelength = (3x10^8)/(1.28x10^17)
= 0.000000002 m
= 2.34 nm

5 0
3 years ago
Convert 19 kcal into joules
il63 [147K]

19~ \text{kcal} = 19 \times 1000 ~\text{cal } = 19000~ \text{cal} = 19000 \times 4.184~ \text{J} = 79496~ \text{J}

7 0
2 years ago
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