Answer:
Answers are given below
Explanation:
Significant figures:
When we add or subtract the values the number of significant figures after decimal in result must be equal to the given measurement having less number of decimal places.
b) 5.45 -2.3
3.2
d) 14.98 + 27,340 + 84.7593
27439.74
When we multiply or divide the values the number of significant figures must be equal to the less number of significant figures in given value.
a) 628 × 342
214776
we will round off this value into 3 significant figures.
215000
c) 28.0/13.483
2.08
Answer:
The right answer is "8.81 atm".
Explanation:
Given:
V = 5.00 L
Mass = 4900 g
MW = 32 g/mol
T = 350 K
Now,
Number of moles will be:
By using the ideal gas equation, we get
⇒ 
or,
⇒ 
By substituting the values, we get
Ammonia is a molecule that consists of a single nitrogen atom and three hydrogen atoms. The chemical formula is NH4. The atoms within the molecule have covalent bonds. The main type of attractive force between ammonia molecules are hydrogen bonds due to the three nitrogen-hydrogen bonds.
Naturally occurring terbium (65Tb) is composed of 1 stable isotope, 159Tb.
