1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
GrogVix [38]
3 years ago
5

Use the periodic table to calculate the molar mass of each compound below. Give your answer to the

Chemistry
1 answer:
koban [17]3 years ago
8 0

Answer:

NaOH:  22.99 + 16.00 + 1.008 = 40.00 g/mol

H₂O:  2(1.008) + 16.00 = 18.02 g/mol

C₆H₁₂O₆:  6(12.01) + 12(1.008) + 6(16.00) = 180.2 g/mol

CaSO₄:  40.08 + 32.06 + 4(16.00) = 136.1 g/mol

Mg₃(PO₄)₂:  3(24.33) + 2(30.97) + 8(16.00) = 262.9 g/mol

The numbers I added up are the atomic numbers you can find on the periodic table.  Multiply the atomic numbers by however many atoms of a element you have.

You might be interested in
3. How many atoms are found in 5.20 g of magnesium (Mg)?
Ganezh [65]

Explanation:

In order to go from mass of magnesium to atoms of magnesium, we have to do two things:

   Convert mass of Mg to moles of Mg using the molar mass of Mg as a conversion factor

   Convert moles of Mg to atoms of Mg using Avogadro's number (6.02×1023) as a conversion factor

Step 1:

Before we start, I should note that the molar mass of Mg is 24.31gmol. We can go from mass to moles using dimensional analysis. The key to dimensional analysis is understanding that the units that you don't need any more cancel out, leaving the units that are desired:

48.60g

×1mol24.31g

=2.00mol

Step 2:

We'll use this relationship:

www.sprinklernewz.uswww.sprinklernewz.us

Using the moles of Mg that we just obtained, we can use Avogrado's number to perform dimensional analysis in order to cancel out units of mol to end up with atoms of Mg:

2.00mol

×6.02×1023atoms1mol

=1.204×1024atoms

Thus, 48.60g of Mg is equivalent to 1.204×1024atoms

Hope this helped :)

6 0
3 years ago
A zinc block with a mass of 230 g is given 1320 J of energy. What is the change in
Mariana [72]

Answer:

14.7°C

Explanation:

Q = m·ΔT·c

ΔT = \frac{Q}{m*c}

ΔT =\frac{1320 J}{230 g* 0.39 J/gC}

     = 1320 J / ((230 g) * (.39 J/g°C)

ΔT = 14.7 °C      

4 0
3 years ago
a rock has a density of 17 g/cm3. If it is cut into 3 equal size pieces, what will be the density of each piece?
erma4kov [3.2K]
All pieces will be 17 g/cm^3 because the density is not affected by cutting (assuming the rock is uniform).
6 0
2 years ago
Which would have a higher pH, a 0.1 M solution of a strong acid, or a weak acid? Why?
DerKrebs [107]

Answer:

0.1 M weak acid

Explanation:

The term pH simply means power of hydrogen which is basically a log (the exponent to base 10 of the concentration) of the concentration of the hydrogen ions.

Weak acids have a higher pH since their hydrogen concentration is lower than that of strong acids.

6 0
3 years ago
What is BHC in benzene?
dezoksy [38]

Answer:

Benzene Hexachloride

Explanation:

BHC in benzene mean ''Benzene Hexachloride''.

<h2>B = Benzene</h2><h2>H + C = Hexachloride </h2>

As you can see, There are only two words and three letters. Even though it is one word, Hexa = H and Chloride = C

4 0
3 years ago
Other questions:
  • Name 2 types of conduction
    8·1 answer
  • A piece of an unknown substance weighing 124.0 grams is heated in boiling water to 100.0oc. when the substance is placed in a ca
    9·1 answer
  • What are the contents of a electron cloud?
    7·1 answer
  • What is stratosphere
    13·1 answer
  • Jacob takes 7 classes, each 50.00 minutes long every day for the 5 day school week. How many hours per week does he spend in cla
    15·1 answer
  • How many moles of KBr are present in 8.96 x 10^21
    6·1 answer
  • Please solve this problem using dimensional analysis. Show your
    13·1 answer
  • Suppose you wanted to dissolve 40.0 g NaOH in enough H2O to make 6.00 dm3 of solution
    14·1 answer
  • Determine the empirical formula of a compound containing 47.37 grams of carbon, 10.59 grams of hydrogen, and 42.04 grams of oxyg
    10·1 answer
  • You start out with 800 moles of a radioactive substance. After 24 hours, 100 moles remain. What is the half-life of the substanc
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!