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balandron [24]
3 years ago
12

In a chemical reaction, energy may be released in what forms

Chemistry
2 answers:
Ipatiy [6.2K]3 years ago
7 0
Exothermic reactions
bezimeni [28]3 years ago
7 0
In a chemical reaction, energy may be released in exothermic reaction. One example may be the reaction of water with H2SO4.

The opposite is endothermic reaction such as ice melting
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When two species A and B form an electron-pair bond and A does not provide its electrons for bonding, the bond present between A
vichka [17]

Answer:

Ionic

Explanation:

If A does not have electron to bond, it just receives one electron from B.

It can´t be covalent because A don´t have any electrons to bond with B.

5 0
2 years ago
What is the correct name for TiF3
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Answer:

Titanium fluoride

Explanation:

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Calculate the volume of an object with dimensions measuring: 15cm x 6cm x 10cm
Oksanka [162]

Answer:

15 X 6 X 10 = 900 cm³

Explanation:

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2 years ago
A sample of nitrogen gas expands in volume from 1.3 to 5.7 L at constant temperature. Calculate the work done in joules if the g
just olya [345]

Answer:

a) 0 J

b)  -2.67x10² J

c) -2.09x10³ J

Explanation:

For an isothermic expansion (with constant temperature) the work (W) is :

W = -pΔV, where p is the pressure and ΔV the volume variation. The minus signal is used because the compression is positive and ΔV is negative (Vf < Vi).

a) In vacuum, the relative pressure is 0 atm, so the work:

W = -0x(5.7 - 1.3)

W = 0 J

b) For a constant pressure of 0.60 atm

W = -0.6atmx(5.7 - 1.3)L = -2.64 L.atm

1 L.atm = 101.3 J

W = -2.64x101.3 = -2.67x10² J

c) For a pressure of 4.7 atm

W = -4.7atmx(5.7 - 1.3) L = - 20.68 atm.L

1 atm.L = 101.3 J

W = -20.68x101.3 = -2.09x10³ J

7 0
3 years ago
Perform the following operation and express the answer in scientific notation. 1.26x104 + 2.50x104 [?]x10​
ss7ja [257]
Since your multiplying by the same number, 104, both terms, you can group them like this:
104(1.26+2.50)
104(3.76)
391.04

Knowing that scientific notation needs to be a number x, that’s greater or equal to 1, and less then 10.
3.9104 * 10^2
4 0
3 years ago
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