Answer:
HfCl3
Explanation:
Step 1
Divide the percent by mass of each element by its relative atomic mass
Hf- 62.2/178.5, Cl-37.4/35.5
0.348, 1.054
Step2
Divide through by the lowest ratio
0.348/0.348, 1.054/0.348
1, 3
Therefore the empirical formula is HfCl3
Answer:
The answer to your question is: 167 ml
Explanation:
Data
HCl = 6 M
Volume 1 = ?
HCl 2 = 2 M
Volume 2 = 500 ml
Formula
C1 V1 = C2 V2
V1 = C2V2 / C1
Process
V1 = (2 x 500) / 6
V1 = 1000 / 6
V1 = 166.7 ml ≈ 167 ml
<span>Persamaan setara pada reaksi besi dengan asam klorida membentuk besi (II) klorida dan gas hidrogen
</span>
Answer:
1.95 M
Explanation:
Molarity is a measure of the molar concentration of a substance (solution). In relation to the volume, it is calculated using the formula as follows;
C1V1 = C2V2
Where;
C1 = initial concentration (M)
C2 = final concentration (M)
V1 = initial volume (L)
V2 = final volume (L)
According to the provided information in this question;
C1 = 14.38 M
C2 = ?
V1 = 1.28 L
V2 = 9.45 L
Using C1V1 = C2V2
14.38 × 1.28 = C2 × 9.45
18.4064 = 9.45 C2
C2 = 18.4064 ÷ 9.45
C2= 1.95 M
The type of chemistry that allows the anthropologist to find out the nature of the substance in a mummy's wrap would be analytical chemistry. It is a branch of chemistry which deals with obtaining and processing information pertaining to the composition and the structure of the subject in question. It deals with apparatus and techniques to identify, separate and quantify a substance. It is the science of the determination of a substance and how much is present. By the analytical techniques, the anthropologist could hypothesize what is the substance of the wrap and its physical and chemical properties.