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zhannawk [14.2K]
3 years ago
13

8. A wave has a frequency of 46 Hz and a wavelength of 2.1 meters. What is the speed of the wave?

Chemistry
1 answer:
AleksAgata [21]3 years ago
6 0

Answer:

the speed of the wave is 96.6

Explanation:

to find do frequency x wavelength

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What is the magnitude of earthquake took place in manila?<br>A.5.2<br>B.5.3<br>C.5.4<br>D.5.5​
stepan [7]

Answer:

i believe its 5.2

Explanation:

6 0
3 years ago
How many grams of solid NaOH are required to prepare a 400ml of a 5N solution? show your work!
Nuetrik [128]

<u>Answer:</u> The mass of solid NaOH required is 80 g

<u>Explanation:</u>

Equivalent weight is calculated by dividing the molecular weight by n factor. The equation used is:

\text{Equivalent weight}=\frac{\text{Molecular weight}}{n}

where,

n = acidity for bases = 1 (For NaOH)

Molar mass of NaOH = 40 g/mol

Putting values in above equation, we get:

\text{Equivalent weight}=\frac{40g/mol}{1eq/mol}=40g/eq

Normality is defined as the umber of gram equivalents dissolved per liter of the solution.

Mathematically,

\text{Normality of solution}=\frac{\text{Number of gram equivalents} \times 1000}{\text{Volume of solution (in mL)}}

Or,

\text{Normality of solution}=\frac{\text{Given mass}\times 1000}{\text{Equivalent mass}\times \text{Volume of solution (in mL)}}         ......(1)

We are given:

Given mass of NaOH = ?

Equivalent mass of NaOH = 40 g/eq

Volume of solution = 400 mL

Normality of solution = 5 eq/L

Putting values in equation 1, we get:

5eq/L=\frac{\text{Mass of NaOH}\times 1000}{40g/eq\times 400mL}\\\\\text{Mass of NaOH}=80g

Hence, the mass of solid NaOH required is 80 g

4 0
3 years ago
What is 5.0553 x 10^-4 in standard notation?
Talja [164]

Answer:

0.00050553

Explanation:

when the power of ten is negative, move the decimal to the left

hope this helped!

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Because of the sea waters density. If an object is less dense than the water it would not float
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I think A but I’m not sure so
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