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crimeas [40]
4 years ago
15

Which statement about the elements in the periodic table is true?

Chemistry
1 answer:
Mariulka [41]4 years ago
5 0

where are the statements?

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Arranges the following molecules in order of increasing dipole moment: <br> H2O, H2S, H2Te, H2Se.
erastova [34]

Explanation:

Dipole moment is defined as the measurement of the separation of two opposite electrical charges.

H_{2}O is a bent shaped molecule with a dipole moment of 1.87.

H_{2}S is also a bent shaped molecule with a dipole moment of 1.10.

H_{2}Te is a also a bent shaped molecule and has a negligible dipole moment.

H_{2}Se has a dipole moment of 0.29.

Therefore, given molecules are arranged according to their increasing dipole moment as follows.

        H_{2}Te < H_{2}Se < H_{2}S < H_{2}O

7 0
4 years ago
Balance each of the following chemical equations
Rus_ich [418]

Answer:

Ca+2HNO3=Ca(NO3)2+H2

Explanation:

8 0
3 years ago
Write the two balanced equations, one for the incomplete combustion of methane (to form carbon monoxide and water vapor), and an
kompoz [17]

Answer:

2CH_{4(g)} +3O_{2(g)} -->2CO(g)+4H_{2}O_{(g)}\\CH_{4(g)} +2O_{2(g)} -->CO_{2(g)} +2H_{2}O_{(g)} \\

Explanation:

2CH_{4(g)} +3O_{2(g)} -->2CO(g)+4H_{2}O_{(g)}\\CH_{4(g)} +2O_{2(g)} -->CO_{2(g)} +2H_{2}O_{(g)} \\

The incomplete combustion of alkanes, and other fuels actually, happens when there is a limited supply of oxygen. Instead of the fuel burning completely to produce carbon dioxide, it produces carbon monoxide instead.

This gas is harmful to jumans because it combines with haemoglobin in lood and takes up space that belongs to oxygen which can lead to suffocation or even death

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3 years ago
0.155 mole of Na2co3 in 200.0 ml of solution
Tatiana [17]
Molarity = Moles of solute / Liters of solution,
Convert 200 ml into Liters which is .2 Liters........ Then Do : (.155 / .2)
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What is residual waste ?
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Residual waste is no hazardous industrial waste. It includes waste materials solid, liquid, and gas. It excludes certain coal mining wastes and wastes from NORMAL farming activities.
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