1 silicon atom
I hope this is helpful:)
Two elements that have similar properties has silicon would be above or below silicon. they are germanium or antimony.
Answer:
D
Explanation:
A. Is wrong
Salt water is not an element. In fact it contains sodium and chlorine asides the elements of the water
B is wrong
It is a mixture but it is not heterogeneous. It is not heterogeneous in the sense that when you take a sample of salt, the composition is throughout the same I.e containing salt and water
C is incorrect
It is a mixture of salt and water. They are both compounds and hence they both exist together as a mixture
D is correct
It is correct because, a sample of salt water irrespective of the amount taken for observation would contain salt and water
P1V1 = P2V2
1.2ATM*(.7 L) = V2 * .95L
V2 = 0.884 Liters or 884.21 ml
2H₂ + O₂ ---> 2H₂O
2 mol...............2 mol
2 mol H₂ ---- 2 mol H₂O
5 mol H₂ ---- X
X = 5 mol H₂O
