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myrzilka [38]
2 years ago
8

30 points if you can help me with this chemistry question

Chemistry
1 answer:
PIT_PIT [208]2 years ago
5 0

answer:

i am pretty sure you use cross charges for this.

so i think it is the third choice.

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PLEASE HELP!!! 10 POINTS
k0ka [10]

i think the answer is C

3 0
3 years ago
Select all the correct images<br><br> Select the atoms that belong to the same element
mezya [45]

Answer: Atoms with 11 protons, 10 neutrons and 11 electrons belong to the same element with 11 protons, 12 neutrons and 11 electrons.

Explanation:

Elements that contain same number of valence electrons belong to the same group. This is because they will have same reactivity (or properties) due to which they lie in the same group.

For example, element with 11 protons, 10 neutrons and 11 electrons is same as the element with 11 protons, 12 neutrons and 11 electrons.

Hence, both these atoms belong to the same element.

Thus, we can conclude that atoms with 11 protons, 10 neutrons and 11 electrons belong to the same element with 11 protons, 12 neutrons and 11 electrons.

3 0
3 years ago
Question
VMariaS [17]

Answer:

12.62 L

Explanation:

First, we have to calculate the moles corresponding to 18.0 g of oxygen gas (MW 32.0).

18.0 g × (1 mol/32.0 g) = 0.563 mol

Then, we can find the volume occupied by 0.563 moles of oxygen at STP (273,15 K, 1.00 atm) using the ideal gas law.

P × V = n × R × T

V = n × R × T / P

V = 0.563 mol × 0.0821 atm.L/mol.K × 273.15 K / 1.00 atm

V = 12.62 L

7 0
3 years ago
Read 2 more answers
if i initially have 4.0 L of a gas at a pressure of 1.1 atm, what will the volume be if i increase the pressure to 3.4 atm
Lelechka [254]

Answer:

<h3>The answer is 1.29 L</h3>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we are finding the new volume

V_2 =  \frac{P_1V_1}{P_2}  \\

From the question we have

V_2 =  \frac{4 \times 1.1}{3.4}  =  \frac{4.4}{3.4} \\   =1.294117647...

We have the final answer as

<h3>1.29 L</h3>

Hope this helps and

6 0
3 years ago
If told to determine whether or an unknown substance is either salt or sugar what do you do to determine which it is explain?
Aleonysh [2.5K]
If you were allowed to taste it sugar will be more sweeter whereas salt wouldnt. But if you were to touch it then sugar is more tinnier than salt.
3 0
3 years ago
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