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Reika [66]
3 years ago
13

A scientific law is

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

the answer is 4. a scientific law is often based in the scientific community

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What mass of agno3 can be dissolved in 250g of water at 20°c?
Mice21 [21]
Hello there,

You should know the <span>solubility of AgNO3 in water at 20°C equals to 2220 g/L.

So we can say that in 1 L of water, 2220 g of AgNO3 can be dissolve.

Now you should know 1L = 1000g.

Which means 1000 g of water can dissolve 2220 g of AgNO3.

Therefore :

</span>250 g<span> --> x
1000 g --> 2220 g

So : </span>x = \frac{250*2220}{1000} =  \frac{555000}{1000}= 555g.

In short, 555g of AgNO3 can be dissolved in 250g of water at 20°C.

Hope this helps !

Photon
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3 years ago
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What kind of weather can Wyoming soon expect?
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Average temperatures in July range from 85°F to 90°F during the day but cool off quickly after dark, dropping into the 50s and 60s (°F). Some regions of Wyoming are classified as desert, so there isn't much precipitation. Most of it falls as rain in the late spring and early summer, which is also a windy time of year.

Explanation:idk if this helps awnser ur question

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What is not true of a strong base? A. It must have a concentration above 1.0 M. B. It is always a strong electrolyte in water. C
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The choices are true about the characteristic of a strong base, except for it having a concentration of above 1.0 M. Therefore, the answer is letter A. The concentration of the base is not a very important as to how strong really the base is. 
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Chemical bonds are formed or broken. This is true of a chemical change, but not a physical change. A physical change is usually something that you can see, such as changing of shape or form or staying the same.  However, because you cannot visibly see chemical bonds being formed or broken and because this would affect the chemical composition, it is not a physical change.

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