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3 years ago

Convert 67 inches into a feet

Chemistry

1 answer:

fiasKO [112]3 years ago

4 0

Answer:

Explanation:every feet has 12in so divde, 67/12 so its 5ft 7/12

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How many moles are in 3.46 g of chromium?

Bezzdna [24]

Answer:

0.06654345229738384 moles of chromium.

6 0

3 years ago

What is the product of radioactive decay He called?

Zinaida [17]

Answer:

Alpha, Beta, and Gamma particles according to ability to penetrate matter.

Explanation:

Alpha represent the largest particle which penetrates the least with a positive charge,
Beta particles carry a negative charge, and
Gamma rays are neutral.

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3 years ago

(a) the characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon, hydrogen, and oxygen. combustio

ella [17]

By stoichiometry and assume that:

CxH2xOy + zO2 -> xCO2 + xH2O

CO2: 9.48/44 = 0.215 mmol
H2O: 3.87/18 = 0.215 mmol
mass of C = 0.215 * 12 = 2.58 mg
mass of H = 0.215 * 2 * 1 = 0.43 mg
mass of O in ethylbutyrate = 4.17 - 2.58 - 0.43 = 1.11 mg
So C/O = 2.58/1.11 ≈ 3

Thus we have C3H6O

8 0

3 years ago

Read 2 more answers

Which of the following is true about a compound and its elements?

BaLLatris [955]

They can change properties completely
They can be separated
They form a new set of elements and compounds
The elements become part of the original compounds

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3 years ago

Read 2 more answers

How many moles in 4.93 x 10E23 atoms of silver?

leva [86]

<h3>Answer:</h3>

0.819 mol Ag

<h3>General Formulas and Concepts:</h3>

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Atomic Structure

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional Analysis

<h3>Explanation:</h3>

Step 1: Define

4.93 × 10²³ atoms Ag

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Set up: $\displaystyle 4.93 \cdot 10^{23} \ atoms \ Ag(\frac{1 \ mol \ Ag}{6.022 \cdot 10^{23} \ atoms \ Ag})$
Divide: $\displaystyle 0.818665 \ mol \ Ag$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.818665 mol Ag ≈ 0.819 mol Ag

8 0

2 years ago