Zinc deficiency affects the skin and gastrointestinal tract; brain and central nervous system, immune, skeletal, and reproductive systems. Zinc deficiency in humans is caused by reduced dietary intake, inadequate absorption, increased loss, or increased body system use. The most common cause is reduced dietary intake.
The speed of sound depends on these two things: The type of medium and the temperature of the medium; option a.
<h3>What is the speed of sound?</h3>
The speed of sound is the distance covered in meters over a given period of time.
Speed = distance/time
The speed of sound depends on the following:
- temperature - the speed of sound increases with temperature
- medium - the speed of sound increases with increase in density of the medium.
In conclusion, the speed of sound increases with temperature.
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Answer:
1 mole =22.4 L of gas at STP. So now 1 mole of H2 gas weighs equal to 2 grams.
Explanation:
Answer:
Explanation:
Total weight of 5 rings
= 18 x 5
= 90 g
silver = 10% of 90 g
= 9 g
gold = 81 g
Let silver added = x gm
Total weight = 90 +x
75% of (90+x) is gold
= 3/4 x (90+x)g is gold
So 3/4 x (90+x) = 81
(90+x) = 81 x 4 / 3
= 108
x = 18 g
silver to be added = 18g .
Answer:
there is no chance of any defects. 2) The position of isotopes becomes clarified in modern periodic table. That is the main two reasons as to why modern periodic table is less defective than Mendeeleev's periodic table.
Explanation:
Reason 1:- It is based on atomic number.
Reason 2:-Problem regarding Position of isotopes is resolved.
Reason 3:-Problem of position of Cobalt and Nickel is resolved whigh were placed wrongly in mandeelev periodic table.
Reason 4:-Blank spaces which were there in mandeelev periodic table are no more vacant now.
