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chubhunter [2.5K]
3 years ago
12

Suppose your teacher asks you to separate a mixture of sand and water. Which of the following methods would you use: distillatio

n, filtration, or evaporation? Explain your answer
Chemistry
2 answers:
dexar [7]3 years ago
8 0
Filtration; Because, then, you can filter out the water from the sand, put the water in one place [DO NOT WRITE THIS DOWN : (Ex. Cup, Bowl; etc.)] and then, put the sand in another one / place.
WINSTONCH [101]3 years ago
7 0
Evaporation
It would help separate each other because the water is going to evaporate and it will only remain the sand
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How many neutrons does an element have if its atomic number is 41 and its mass number is 170?
BARSIC [14]

atomic number = protons.

protons+neutrons=atomic mass.

170 (mass) - 41 (proton/number) = 129

that should be ur answer. I hope this helps!

7 0
4 years ago
How many hydrogen atoms are in 5.40 mol of ammonium sulfide?
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Calculate the pH for each H+ concentration.
castortr0y [4]

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The answer of 1×10 -8 is 2

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Which of the following is an example of a way you can reduce personal consumption of resources?
dsp73

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3 years ago
The rate constant for a certain reaction is k = 5.40×10−3 s−1 . If the initial reactant concentration was 0.100 M, what will the
IceJOKER [234]

Answer : The concentration after 17.0 minutes will be, 4.05\times 10^{-4}M

Explanation :

The expression for first order reaction is:

[C_t]=[C_o]e^{-kt}

where,

[C_t] = concentration at time 't'  (final) = ?

[C_o] = concentration at time '0' (initial) = 0.100 M

k = rate constant = 5.40\times 10^{-3}s^{-1}

t = time = 17.0 min = 1020 s (1 min = 60 s)

Now put all the given values in the above expression, we get:

[C_t]=(0.100)\times e^{-(5.40\times 10^{-3})\times (1020)}

[C_t]=4.05\times 10^{-4}M

Thus, the concentration after 17.0 minutes will be, 4.05\times 10^{-4}M

4 0
3 years ago
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