Answer:
23.22 g
Explanation:
Mass in 1 mol of water = 18g
Mass in 1.29 mol of water
= 18 x 1.29
= 23.22 g
Answer:
In order to determine the exact melting point of substance, it should be packed well in melting point tubes. If we don't pack properly, then its melting point will be low.
Reason:
Actually when you do not packed the substance well, then air pickets inside the solid will depress the melting point of your solid.
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I would assume "cs" stands for centiseconds.
Using your metric prefixes...centi means one hundredth.
So 157 cs = 157 hundredths of a second = 1.57 seconds
The primary sources of acidity in acid rain are the gases SO and NO So, the correct option is (c) SO and NO
A chemical process that starts when gases like sulphur dioxide and nitrogen oxides are discharged into the atmosphere leads to acid rain. These substances have the ability to ascend very far into the sky, where they combine and react with oxygen, water, and other chemicals to produce acid rain, an additional form of acidic pollution.
Acidic particles corrode metal and hasten the deterioration of paint and stone. Power plants are the primary sources of SO . Burning fossil fuels produces nitrogen dioxide (like gasoline). Cars, lorries, and power plants are the biggest producers of NO.
Therefore, The primary sources of the acidity in acid rain are the gases SO and NO.So, the correct option is (c) SO and NO
Learn more about acid rain here;
brainly.com/question/11543614
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Answer:
all bulbs will light up once the switch is closed