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levacccp [35]
3 years ago
10

URGENT PLZ HELP

Chemistry
1 answer:
jonny [76]3 years ago
4 0

Answer:

What happens to the value of ΔH for a thermochemical reaction if the reaction is

reversed?

Explanation:

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Help Please! Thanks!
soldier1979 [14.2K]

Answer:

a

Explanation:

it would be the most reasonable

4 0
2 years ago
Read 2 more answers
Using the periodic table, how would you find elements with chemical properties similar to helium?
rosijanka [135]
<span>The state of the helium in its natural form is gaseous and is a chemical element of colorless aspect and belongs to the group of noble gases. The atomic number of helium is 2. The chemical symbol of helium is He. For the following we focus on those elements and relate it with similar chemical properties. Then we find that; Neon, Hydrogen, Boron and Carbon are related to helium, either by proximity in their atomic number or period or by their group.</span>
3 0
3 years ago
Given that a 12.00 g milk chocolate bar contains 8.000 g of sugar, calculate the percentage of sugar present in 12.00 g of milk
neonofarm [45]
So in order for us to know the percentage of sugar present in a 12.00 g of milk chocolate, what we are going to do is that, we just have to divide 8 by 12 and multiply in by 100 and we get 66.67. Therefore, the percentage of sugar present in 12.00 g of milk chocolate bar is 66.67%. Hope this answers your question. Have a great day!
5 0
3 years ago
Read 2 more answers
a square boat made from iron has overall dimensions of 2.00 cm x 11.0 cm x 11.0 cm. it has a mass of 213 g. water has a density
Stolb23 [73]
Density of boat  =  \frac{MASS}{VOLUME}
                           
                          =  \frac{213 g}{(2 cm  *  11 cm  *  11cm)}
 
                          =   0.88 g / cm³

Since the density of water is greater than the density of the boat ( 1 > 0.88) then that means, the boat will NOT sink.

B.

4 0
3 years ago
Read 2 more answers
An ambulance took 2 hours to cover a distance of 10 kilometers. Find its speed.​
bekas [8.4K]

Answer:

5km/hour

Explanation:

2hours = 10km

/2              /2

1 hour = 5km

7 0
2 years ago
Read 2 more answers
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