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shusha [124]
3 years ago
6

Multiply or divide the following me 364.51 m - 63.46 s 3

Chemistry
1 answer:
IgorC [24]3 years ago
6 0

Answer:

In multiplication the answer can contain only the least significant figures as present in any of its values . Here 93.4

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A rock sample has a mass of 125 grams and a volume of 50 mL. What is the density of this rock sample?
iris [78.8K]

Answer:

2.5g/ mll

Explanation:

d=m/v

5 0
3 years ago
Please help me with the questions!
dsp73

Answer:

2500kg/m3

Explanation:

Mass=20g= 20×10^-3kg

Volume=8x10^-6m3

<h2>Now we know that Density = mass\volume</h2>

D= 20×10^-3/8×10^-6

=2500kg/m3

5 0
3 years ago
A chemistry teacher is able to grade chemistry labs at a rate of 5 labs for every 3 minutes. They need to grade 165 labs how man
PIT_PIT [208]

Answer:

1.65hr

Explanation:

Given parameters:

Number of labs  = 5 labs

 Time taken  = 3 minutes

Unknown:

Time taken in hours to grade 165 labs  = ?

Solution:

Let us find the rate of the teacher;

  Rate  = \frac{number of labs}{time}  

  Insert the parameters and solve;

   Rate  = \frac{5}{3}   = 1.67labs/min

Now;

   Time to grade 165 labs  = \frac{number of labs}{rate}  

   Time to grade 165 labs  = \frac{165}{1.67}   = 98.8min

  Since;

               60min = 1hr

               98.8min  = \frac{98.8}{60}   = 1.65hr

3 0
3 years ago
6. Matter with a definite volume but no definite shape is a<br> A gas<br> B. solid<br> C.liquid
Nonamiya [84]

Answer:

Liquid

Explanation:

3 0
3 years ago
The compound potassium sulfide is a strong electrolyte. Write the transformation that occurs when solid potassium sulfide dissol
Alex17521 [72]

Answer:

K₂S(s) → 2K⁺(aq) + S²⁻(aq)

Explanation:

A strong electrolyte is a compound that, in solution, dissociates completely. For a compound XₐYₙ that dissolves in water:

XₐYₙ(s) → aXⁿ⁺(aq) + nYᵃ⁻(aq)

Now, potassium sulfide (K₂S), as a strong electrolyte dissolves in water thus:

<em>K₂S(s) → 2K⁺(aq) + S²⁻(aq)</em>

<em></em>

I hope it helps!

3 0
3 years ago
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