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aev [14]
3 years ago
7

Give the names of the elements combined in barium sulfide.

Chemistry
1 answer:
Kryger [21]3 years ago
8 0

Answer:

Barium and sulpher are the elements that forms barium sulphide .

And its molecular fomula is BaS.

Explanation:

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Number of neutrons.
The atomic number is a way of identifying elements so if the were all the same than that wouldn't work very well :)
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3 years ago
How many of the electrons in a molecule of ethane are not involved in bondind​
vovikov84 [41]

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7 0
3 years ago
Determine the heat needed to warm 25.3 g of copper from 22 degrees celsius to 39 degrees celsius.
Serggg [28]

Answer:

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

Explanation:

Q=mc\Delta T

Where:

Q = heat absorbed  or heat lost

c = specific heat of substance

m = Mass of the substance

ΔT = change in temperature of the substance

We have mass of copper = m = 25.3 g

Specific heat of copper = c = 0.385 J/g°C

ΔT  = 39°C - 22°C = 17°C

Heat absorbed by the copper :

Q=25.3 g\times 0.385 J/g^oC\times 17^oC=165.59 J

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

5 0
3 years ago
A package of chocolate instant pudding contains 2640 mg of sodium. how many grams of sodium are in the pudding?
alexgriva [62]

Answer:

2.640

Explanation:

Rounding to the nearest whole number would be 3 if that is needed.

4 0
2 years ago
Which best defines a pioneer species?
Juli2301 [7.4K]

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Explanation:

8 0
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