Question

How many different saturated acyclic ethers exist that
contain

(a) two carbon atoms

(b) five carbon atoms

(c) three carbon atoms plus a methoxy group

(d) four carbon atoms plus a propoxy group

Answer #1

Six grams of carbon (C) and four grams of oxygen (O)
contain:
a) twice as many carbon atoms as oxygen atoms.
b) 1.5 times as many carbon atoms as oxygen atoms.
c) the same number of atoms.
d) twice as many oxygen atoms as carbon atoms.

A sample of C3H8 has 2.40 *
1024 atoms.
How many carbon atoms does the sample contain?
? C atoms
What is the total mass of the sample?
? g C3H8

A sample of glucose, C6H12O6, contains 1.200×1021 carbon
atoms.
A)How many atoms of hydrogen does it contain?
D)What is the mass of this sample in grams?

3.If four carbon atoms undergo a chemical reaction with oxygen
to form CO2
molecules, how many carbon atoms will be found in the
product?
a. one
b. two
c. three
d. four
4.Classify the following reaction: FeCl 3 + 3NaOH Fe(OH) 3 +
3NaCl
a. combustion
b. synthesis
c. decomposition
d. single displacement
e. double displacement
5.Classify the following reaction: Cl 2 + ZnI 2 ZnCl 2 + I
2
a. combustion
b. synthesis
c. decomposition
d. single...

Ibuprofen is an anti-inflammatory with the formula C13H18O2. How
many moles of ibuprofen contain 1.04×1023 atoms of carbon? Express
your answer using three significant figures.

A sample of C3H8 has 5.68 × 1024 H atoms.
Part 1) How many carbon atoms does the sample contain?
Part 2) What is the total mass of the sample?

A sample of C3H8 has 4.88 x 10^24 H atoms. How many carbon atoms
does the sample contain? What is the total mass of the sample?

a
sample of propane, C3H8 contains 15.1 moles of carbon atoms. How
many total moles of atoms does the sample contain

(a) How many 12-bit strings contain exactly five 1's?
(b) How many 12-bit strings contain at least nine 1's?
.(c) How many 12-bit strings contain at least one 1?
(d) How many 12-bit strings contain at most one 1?

1) A sample of C3H8 has 7.76 ×
1024 H atoms. How many carbon atoms does the sample contain?
What is the total mass of the
sample?
2) Calculate the
molar mass of each compound given
below. Keep at least one decimal place in atomic masses from the
periodic table.
a. KBr g/mol:
b.Na2s g/mol:
3) A chemist requires 0.885 mol
Na2CO3 for a reaction. How many grams does this correspond
to?

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