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
luda_lava [24]
2 years ago
15

Determine the number of atoms in 73.0 grams of calcium, Ca. (The

Chemistry
1 answer:
Elden [556K]2 years ago
7 0
# of atoms per mol = Avogadro’s # (6.022 x 10^23)

Number of mols = mass of substance / molar mass

73 g / 40.08 g = 1.8 mols of Ca in 73 grams

1.8 mols x avagadro’s # = 1.1 x 10^24 atoms in 73 grams of Ca
You might be interested in
7) Cooking or baking food results in a _________________ change
Flauer [41]
I think the answer is chemical change
6 0
3 years ago
Why do all chemical changes occur
GenaCL600 [577]

Answer:

Chemical Reactions. ... Reactions occur when two or more molecules interact and the molecules change. Bonds between atoms are broken and created to form new molecules.

6 0
3 years ago
What is the mass, in grams, of 50.0L of N2 at STP?
vodka [1.7K]

Hey there!:

Molar mass N₂ = 28.0134 g/mol

28.0134 g ------------------- 22.4 L (at STP )

mass  N₂ -------------------- 50.0 L

mass N₂ = 50.0 x 28.0134 / 22.4

mass N₂ = 1400.67 / 22.4

mass N₂ = 62.529 g

Hope this helps!

6 0
3 years ago
Explain the three laws of chemical reaction in detain gilling examples​
kotykmax [81]

Answer:

The three laws of Chemical Reaction are .The law of constant proportions. The law of multiple proportions. The law of reciprocal proportions.

A chemical compound is always found to be made up of the same elements combined together in the same fixed proportion by mass.

potassium and chlorine gas ---> chloride.

Hope this helps, have a good day.✌

8 0
2 years ago
Mandelic Acid is an organic acid composed of carbon (63.15%), hydrogen (5.30%), and oxygen (31.55%). Its molar mass is 152.14 g/
Dafna1 [17]

Answer:

Empirical formula is C3H3O

Molecular formula C9H9O3

Explanation:

From the question given, we obtained the following data:

Carbon = 63.15%

Hydrogen = 5.30%

Oxygen = 31.55%

We can obtain the empirical and molecular formula by doing the following as illustrated in the attached file. Please see attachment for explanation.

3 0
3 years ago
Read 2 more answers
Other questions:
  • CaO(s) + 2 NH4Cl(s) = 2 NH3(g) + H2O(g) + CaCl2(s)
    5·1 answer
  • Difference between saturated and supersaturated solutions
    13·1 answer
  • The balanced equation for the reaction of ammonia and oxygen is the following. 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) The stand
    13·1 answer
  • How many moles are in 2.85x 10^23 atoms of silver ​
    6·1 answer
  • Metals like potassium and sodium are kept in paroffin oil. Why?​
    9·1 answer
  • What is the correct Lewis structure for a molecule of ammonia, NH3?
    6·1 answer
  • Name of 2 elements with their symbols derived from its german name
    15·1 answer
  • How many hydrogen atoms are in 3 molecules of ethyl alcohol, C2H3OH
    9·1 answer
  • 2. Florida has mild winter temperatures due to the _____?
    10·1 answer
  • Ions in solution are found in a hydration shell of water. This shell must be removed for an ion to pass through the channel. How
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!