A , i think because pure water won't dissolve the powder fast.
<span>A. Helium </span>atomic number 2
hope it helps
Answer is (b) , because a chemical change happened
Answer: The answer is Fossil A is younger than the index fossil.
Explanation: Because it’s the newest layer
Answer:
Data obtained can't be accurate.
Explanation:
A beaker can't be used for measuring the volume of a liquid because they did not calculate volume of a liquid accurately and precisely. The marks present on the beaker are not accurate, it is just an estimate so by measuring the volume of any liquid using beaker give us a false data so that's why beaker are not used for the measurement of a volume.