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Ket [755]
3 years ago
7

sound travels 1,500 m/s through water at 25 degrees celciesunder these conditions how long would it take to travel 300m

Chemistry
1 answer:
lesya [120]3 years ago
4 0

Answer:

v = s \div t

t = s \div v

t = 300 \div 1500 = 0.2s

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A solution has a pH of 11.8. What is the pOH?
amid [387]

Answer:

pOH is 2.2

Explanation:

The pH scale goes from 0 to 14. As such, the pH and the pOH add up to 14. Subtract your pH from 14 to get your answer.

14 - 11.8 = 2.2

5 0
3 years ago
Determine how many formula units are in 2.35 moles of lithium phosphite?
Stells [14]

Answer:

Determine how many formula units are in 2.35 moles of lithium phosphite?

Explanation:

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4 0
3 years ago
Consider the reaction of Mg3N2 with H2O to form Mg(OH)2 and NH3. If 4.33 g H2O is reacted with excess Mg3N2 and 6.26 g of Mg(OH)
Len [333]

Answer:

89.34%

Explanation:

First, write a balanced reaction.

Mg3N2 + <u>6</u>H2O --> <u>3</u>Mg (OH)2 + <u>2</u>NH3

Next determine the moles of the known substance, or limiting reagent ( H2O)

n= m/MM

n ( H2O) = 4.33/(1.008×2)+16

n(H2O)= 0.2403

Use the mole ratio to find the moles of Mg(OH)2

0.2403 ÷2

n (Mg (OH)2) = 0.1202

Next, find the theoretical mass of Mg (OH)2 that should have been produced

m= n × MM

m= 0.1202 × (24.305 + (16×2) +(1.008 ×2))

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6.26/ 7.007 × 100

=89.34%

7 0
3 years ago
a 250.0 ml buffer solution is 0.250 M in acetic acid and. 250M in sodium acetate. what is the ph after addition of. 0050 mol of
maw [93]
Hello there.

<span>A 250.0 ml buffer solution is 0.250 M in acetic acid and. 250M in sodium acetate. what is the ph after addition of. 0050 mol of HCL? what is the ph after the addition of. 0050 mol of NaOH?

Part 2 answer: </span><span>pH = 4.67 </span>
4 0
3 years ago
What is the pH if the [H+] is 10.25x10-7M?
Marysya12 [62]

Answer:

5.99

Explanation:

-log(10.25x10^-7)

- Hope this helps! Please let me know if you need further explanation.

7 0
3 years ago
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