All categories

2 years ago

A fish is swims 7200 meters in the lake in 120 minutes. What is her average speed in m/min?

Chemistry

2 answers:

liberstina [14]2 years ago

7 0

Answer:

60m/min

Explanation:

speed = distance/time

=7200m/120min

=60m/min

atroni [7]2 years ago

7 0

Answer:

Explanation:

because 7200 divided by 120 is 60

You might be interested in

What is meaning of trash

salantis [7]

Answer:

waste or discarded material

7 0

3 years ago

Read 2 more answers

The whole reason things stay afloat or sink is because water is

mars1129 [50]

Answer:

I think the density of the object determines if it floats or sinks

5 0

2 years ago

Look up the densities of the elements

salantis [7]

Answer: Which Group 1A elements are less dense than pure water at 4 degrees C? Li Na K. How does density vary with temperature? Temperature up, density down.

Explanation:

6 0

2 years ago

Read 2 more answers

Consider the following: If the Earth's Crust are constantly moving, what

Vesnalui [34]

Answer:

the shape of the continents will continue to change, without even accounting for rising sea levels

Explanation:

5 0

3 years ago

0.10 M potassium chromate is slowly added to a solution containing 0.20 M AgNO3 and 0.20 M Ba(NO3)2. What is the Ag+ concentrati

erastova [34]

Answer:

$[Ag^{+}]=4.2\times 10^{-2}M$

Explanation:

Given:

[AgNO3] = 0.20 M

Ba(NO3)2 = 0.20 M

[K2CrO4] = 0.10 M

Ksp of Ag2CrO4 = 1.1 x 10^-12

Ksp of BaCrO4 = 1.1 x 10^-10

$BaCrO_4 (s)\leftrightharpoons Ba^{2+}(aq)\;+\;CrO_{4}^{2-}(aq)$

$Ksp=[Ba^{2+}][CrO_{4}^{2-}]$

$1.2\times 10^{-10}=(0.20)[CrO_{4}^{2-}]$

$[CrO_{4}^{2-}]=\frac{1.2\times 10^{-10}}{(0.20)}= 6.0\times 10^{-10}$

Now,

$Ag_{2}CrO_4(s) \leftrightharpoons 2Ag^{+}(aq)\;+\;CrO_{4}^{2-}(aq)$

$Ksp=[Ag^{+}]^{2}[CrO_{4}^{2-}]$

$1.1\times 10^{-12}=[Ag^{+}]^{2}](6.0\times 10^{-10})$

$[Ag^{+}]^{2}]=\frac{1.1\times 10^{-12}}{(6.0\times 10^{-10})}= 1.8\times 10^{-3}$

$[Ag^{+}]=\sqrt{1.8\times 10^{-3}}=4.2\times 10^{-2}M$

So, BaCrO4 will start precipitating when [Ag+] is 4.2 x 1.2^-2 M

7 0

3 years ago