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marishachu [46]
3 years ago
7

How do I solve this? please help and only respond with the answer/work. I will mark BRAINLIEST

Chemistry
1 answer:
Ulleksa [173]3 years ago
4 0

Answer: I think the answer is 2.5 M.

Explanation:  Formula: M = n/v

M= 10 mol / 4L

M= 2.5 M

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What is the predicited order of first ionization energies from highest to lowest for lithium sodium potassium and rubidium
velikii [3]

The predicted order of ionization energies is Li > Na > K > Rb

<em>Atomic size increases as you go down a Group</em> (see image). We are adding electrons to increasingly larger shells.

The valence electrons are further from the attraction of the nucleus, so they are less tightly held.

Thus, <em>Li has the highest ionization energy</em> and <em>Rb the lowest</em>.

4 0
3 years ago
Calculate the number of moles of Cl atoms in 1.81×10^24 formula units of magnesium chloride,MgCl2
rosijanka [135]
3.62*10^24 is the answer
5 0
3 years ago
2CO(g) + O2(g) = 2CO2(g)
Finger [1]

Answer:

3.0 L O₂

Explanation:

If CO reacts at STP, it means that there are 1.0 moles of CO. To find the moles of O₂, you need to use the mole-to-mole ratio from the given equation.

1.0 moles CO            1 mole O₂
----------------------  x  ---------------------  =  0.5 moles O₂
                                2 moles CO

To calculate the liters of oxygen, you need to use Avogadro's Law:

V₁ / N₁ = V₂ / N₂

In this equation, "V₁" and "N₁" represent the volume and moles of the first molecule. "V₂" and "N₂" represent the volume and moles of the second molecule. You can plug the given and calculated values into the equation and simplify to isolate V₂.

V₁ = 6.0 L                     V₂ = ? L

N₁ = 1.0 moles              N₂ = 0.5 moles

V₁ / N₁ = V₂ / N₂                                            <----- Avogadro's Law

(6.0 L) / (1.0 moles) = V₂ / (0.5 moles)         <----- Insert values

6.0 = V₂ / (0.5 moles)                                   <----- Simplify left side

3.0 = V₂                                                         <----- Multiply both sides by 0.5

**I am not 100% confident on this answer. Please let me know if it is incorrect**

8 0
1 year ago
How many molecules of NaOH are in 23<br> moles of NaOH
Ann [662]
120 grams of NaOH means 3 Moles of NaOH because 40 grams (Molecular Weight in grams) is one mole of NaOH.

Each mole of any substance contain Avogadro’s number of molecules ie., 6.022 x (10 to the power 23).

Hence 3 Moles of NaOH contain 3 times of Avogadro’s number of molecules ie., 3 x 6.022 x (10 to the power 23)
3 0
3 years ago
Please help
lora16 [44]
Find the molar mass of CH3 and divide that by 45.0. That should give a whole number and then mult that whole number by CH3 to find molecular formula to get like ( incorrect ex: C2H6) which is mult by 2
6 0
2 years ago
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