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SSSSS [86.1K]
3 years ago
12

17 points help asap!! :) thank youuuu :) Jeff is in a stationary school bus. Which is the best reference point for him to use to

determine when the bus starts to move?
Select one:
a. the front entrance of the school
b. a student walking on the sidewalk
c. the school bus sitting next to him
d. a car waiting to pick up another student
Chemistry
1 answer:
3241004551 [841]3 years ago
5 0

Answer:

The answer would be A

Hope this helps!!!

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A solution is made by mixing 34.5 g of sugar with 75.0 g of water. What is the mass percent of sugar in this solution?
lubasha [3.4K]

the mass percent of sugar in this solution is 46%.

Answer:

Solution given:

mass of solute=34.5g

mass of solvent=75g

mass percent=\frac{mass\:of\:solute}{mass\:of \:solvent}*100\%

=\bold{\frac{34.5}{75.0}*100\%=46\%}

5 0
3 years ago
Just as one dozen eggs always has 12 eggs in it, one mole of a
zzz [600]

Answer:

6.022x10^{23}atoms \ Al

Explanation:

Hello,

In this case, given the described concept regarding the Avogadro's number, we can easily notice that 27.0 g of aluminium foil has 6.022x10²³ atoms as shown below based on the mass-mole-particles relationship:

27.0gAl*\frac{1molAl}{27.0gAl} *\frac{6.022x10^{23}atoms \ Al}{1molAl} \\\\=6.022x10^{23}atoms \ Al

Notice this is backed up by the fact that aluminium molar mass if 27.0 g/mol.

Best regards.

8 0
3 years ago
Silver was precipitated and collected by filtration. The experiment yielded .077g of silver after dying. The predicted yield was
PSYCHO15rus [73]

Answer:

Precentage error = 7.23%

Explanation:

The precentage error formula  is the  useful method  for determining precision of your experimental result

It can be calculated using :

percent\ error = |\frac{experimental\ value-predicted\ value} {predicted\ value}|\times 100

percent\ error = |\frac{0.077\ -0.083} {0.083}|\times 100

So we get percentage error =  7.23%

Precision means how close the experimental value to the true value or theoretical value

If percentage error is large it means experimental results are deviated and there is need to check mistakes,imprecision in the experiment

If the percentage error is zero it means the experiment is perfectly done without  inaccuracy

4 0
3 years ago
What is this compounds name?
Kitty [74]
The name is 2-Chloro Propane
Because the chlorine is linked to the second carbon atom when it is spread out
4 0
3 years ago
URGENT PLEASE HELPIf 25 grams of liquid water releases 75J of heat when water cools from 88 degrees Celsius what is the final te
Sergeu [11.5K]

Answer:

HEY RUBY!! WE ARE BOTH FAILING!!!!!!!

Explanation:

#&-78$#'☠️

6 0
2 years ago
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