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choli [55]
3 years ago
7

Costco installs automobile tires on a first-come first-serve basis. the total time a customer needs to wait for the installation

to be completed follows the normal distribution with a mean time of 106.3 minutes and a standard deviation of 18.5 minutes. the interval around the mean that contains 68% of the wait time for customers is ________.

Chemistry
1 answer:
den301095 [7]3 years ago
3 0
There you go that’s the answer

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Which alkaline earth metal is a component of gypsum​
Allisa [31]

Answer:

calcium is the correct answer :)

4 0
3 years ago
Read 2 more answers
In a constant‑pressure calorimeter, 60.0 mL of 0.300 M Ba(OH)2 was added to 60.0 mL of 0.600 M HCl. The reaction caused the temp
Zepler [3.9K]

Answer:

ΔH = 57.04 Kj/mole H₂O

Explanation:

60ml(0.300M Ba(OH)₂(aq) + 60ml(0.600M HCl(aq)

=> 0.06(0.3)mole Ba(OH)₂(aq) + 0.60(0.6)mole HCl(aq)

=> 0.018mole Ba(OH)₂(aq) + 0.036mole HCl(aq)

=> 100% conversion of reactants => 0.018mole BaCl₂(aq) + 0.036mole H₂O(l) + Heat

ΔH = mcΔT/moles H₂O <==> Heat Transfer / mole H₂O

=(120g)(4.0184j/g°C)(27.74°C - 23.65°C)/(0.036mole H₂O)

ΔH = 57,042 j/mole H₂O = 57.04 Kj/mole H₂O

3 0
3 years ago
How many moles of solute are contained in 3.0 L of a 1.5 M solution? Helppp pleaseee
Art [367]
4.5 moles! I hope my answer helps
8 0
3 years ago
How does the human body keep warm on a cold day?
Margarita [4]
By wearing thick clothes, near in a furnace or something that is warm
7 0
3 years ago
How many moles of MgCl2 where needed to make a 650.0 mL solution a concentration of 0.962 M?
Murljashka [212]

Answer:

0.625 moles MgCl₂

Explanation:

Since you were given a molarity value and volume, you should use the molarity equation to find moles. The equation looks like this:

Molarity (M) = moles / volume (L)

To find moles, you need to (1) convert mL to L (by dividing by 1,000) and then (2) plug the numbers into the formula and simplify to find moles. The final answer should have 3 sig figs as the lowest amount of sig figs in a given value is 3.

<u>Step 1:</u>

650.0 mL / 1,000 = 0.6500 L

<u>Step 2:</u>

Molarity = moles / volume

0.962 M = moles / 0.6500 L

(0.962 M) x (0.6500 L) = moles

0.625 = moles

5 0
2 years ago
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