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vaieri [72.5K]
2 years ago
11

What is the general trend for electron affinity values going across a period?

Chemistry
1 answer:
timama [110]2 years ago
3 0

Answer:

increase.

Explanation:

as you cross the period the atomic size decrease makes the atoms to have more affinity to the coming electrons.

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Depicted below you will see the molecules COH2 and SO3 . Why is COH2 polar while SO3 isn’t?
tia_tia [17]

Answer:

See explanation

Explanation:

When we look at SO3 we will notice that the compound is trigonal planar and it is symmetric. This means that it has equal charge distribution hence its dipoles cancel out resulting in a zero net dipole moment.

However, COH2 is also trigonal planar but is non-symmetric. Hence, its dipole moments do not cancel out, hence the molecule has a resultant dipole moment and is a polar molecule

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2 years ago
Why is it important for science to keep testing a hypothesis even after they’ve found it to be true?
satela [25.4K]

Answer:

Explanation:

Repeated tests help determine whether the hypothesis is always true in different circumstances. Repeatedly testing a hypothesis qualifies it to be accepted as a theory.

6 0
1 year ago
Which of the following is the energy of moving electrons?
mezya [45]

Answer:

Electrical energy

Explanation:

Electrical energy is caused by the moving of electrons.

hope it helps!

6 0
2 years ago
What do oxidation reactions produce during the electrolysis of water?
jok3333 [9.3K]
Hydrogen gas, oxygen gas and water

4H2O (l) ---> 2H2O (l) + O2 (g) + 2H2 (g)
8 0
3 years ago
Read 2 more answers
What volume of a 2.10 M NaCl solution is
cluponka [151]

Answer:

146.3g NaCl (mol NaCl/58.44g NaCl) = 2.50 mol NaCl

1.5M NaCl = 1.5 mol NaCl / 1 L = 2.5 mol NaCl / x L, solve for x

x L = 2.5 mol NaCl / 1.5 mol NaCl = 1.66 L

It gives the answer and all the working.

To put it another way:

Dividing the amount required by the molar mass

we quickly see that 2.5 moles are required.

One litre of 1.5 molar solution gives 1.5 moles

we need a further mole, which is 2/3 of 1.5 so 2/3 of a litre.

3 0
2 years ago
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