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
Orlov [11]
2 years ago
12

Please show all work chemistry thanks 2,3 and 4

Chemistry
1 answer:
nikitadnepr [17]2 years ago
3 0

Answer: 2) 0.21 mole H2O

3) 0.50 mole K2O

4) 123 g Ca( NO3)2

Explanation: solution attached.

For number 2 to find the number of moles of H2O just divide the given in molecules with the Avogadro's number.

For 3 convert grams of K2O to moles by using 1 mole of K2O is equal to the molar mass of K2O

For number 4 moles to grams. Same process with number 3

You might be interested in
Typhoons are large storms that form over the Pacific Ocean Hurricanes are large storms that form over the Atlantic Ocean. Which
Liula [17]
D. Drop in barometric pressure, warm ocean water, humid air. The low pressure brings in a cool air mass causing collision of two different masses.

My father rode out a typhoon near Okinawa WWII, onboard the battleship USS Missouri BB-63.

Violent pitching, alarms going off for approaching capsize pitch. The captain came on loudspeaker “ don’t worry men, land is near... about a mile straight down”.
8 0
2 years ago
Which gas would act most like an ideal gas? a. chlorine gas at 32oC b. chlorine gas at -185oC
Maslowich
A as the lower temperature in Celsius corresponds to a lower Kelvin temperature thus reducing movement
6 0
3 years ago
The + symbol, on the products side, in a chemical equation means
malfutka [58]

Explanation:

Used to separate one reactant or product from another

If it's helpful ❤❤

THANK YOU

7 0
3 years ago
Which element shares the most characteristics with magnesium (Mg)?
hjlf
Probably sodium Na because it has a similar atomic mass and number
4 0
2 years ago
what is the total amount of energy required to remove the most loosely bound electron from each atom in a mole of gaseous Ca
Temka [501]

Answer:

589.8 kJ/mol

Explanation:

Let's consider the process in which <em>the most loosely bound electron from each atom in a mole atom of gaseous calcium is removed.</em>

Ca(g) + Energy ⇒ Ca¹⁺(g) + 1 e⁻

The energy involved in this process is known as First Ionization Energy. The First Ionization Energy for calcium is 589.8 kJ/mol.

5 0
2 years ago
Other questions:
  • Which change of state is shown in the model?
    10·2 answers
  • A sample of three mixed gases is at 632.0 mmhg. if the partial pressure of co2 is 124.3 mmhg and the partial pressure of n2 is 4
    8·2 answers
  • If I have 5,000g of sodium, how much sodium sulfide can be made?
    8·2 answers
  • An atom contains 8 protons, 8 neutrons and 10 electrons. A second atom
    7·1 answer
  • a sample of compound determined to contain 1.71 g C and 0.287 g H. The corresponding empirical formula is
    7·1 answer
  • A duck migrates South for the winter about 3000 miles each year. It takes them about 65 hours to travel this distance. What is t
    6·1 answer
  • What is the energy of an object because of its potential and kinetic energies?
    14·1 answer
  • ______ break down sugars to produce energy.
    7·1 answer
  • What are three units you can measure moler mass in
    7·2 answers
  • If a chlor-alkali cell used a current of 3X10⁴A, how many pounds of Cl₂ would be produced in a typical 8-h operating day?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!