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
Natasha_Volkova [10]
2 years ago
5

How many atoms are in 16.1 G Sr

Chemistry
1 answer:
marysya [2.9K]2 years ago
4 0

Answer: There are 1.11\times 10^{23} atoms of Sr

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{16.1g}{87.6g/mol}=0.184moles

1 mole of Sr contains =  6.023\times 10^{23} atoms of Sr

Thus 0.184 moles of Sr contains =  \frac{6.023\times 10^{23}}{1}\times 0.184=1.11\times 10^{23} atoms of Sr

Thus there are 1.11\times 10^{23} atoms of Sr

You might be interested in
2) Which of the following statements best describes an element?
mixas84 [53]

Answer:

E

Explanation:

The answer woul be E because elements are made of one type of atoms

3 0
3 years ago
Read 2 more answers
Which substance is a product of a fermentation reaction?glucosezymaseethanolwater?
Makovka662 [10]
Answer is:  a product of a fermentation reaction is ethanol (C₂H₅OH).
Fermentation is a metabolic process in which ethanol is produced from sugar in the absence of oxygen (anaerobic digestion)<span>.
</span>Fermentation <span>occurs in </span>yeast, bacteria and in oxygen-starved muscle cells.
Fermentation is a way of extracting energy from molecules and it is <span>the oldest metabolic pathway.</span>
6 0
3 years ago
g Sucrose (C12H22O11), a nonionic solute, dissolves in water (normal freezing/melting point 0.0°C) to form a solution. If some u
DIA [1.3K]

Answer:

15.4 g of sucrose

Explanation:

Formula to be applied for solving these question: colligative property of freezing point depression. → ΔT = Kf . m

ΔT = Freezing T° of pure solvent - Freezing T° of solution

Let's replace data given: 0°C - (-0.56°C) = 1.86 C/m . m

0.56°C / 1.86 m/°C = m → 0.301 mol/kg

m → molality (moles of solute in 1kg of solvent)

Our mass of solvent is not 1kg, it is 150 g. Let's convert it from g to kg, to determine the moles of solute: 150 g. 1kg/1000g = 0.150 kg

0.301 mol/kg .  0.150kg = 0.045 moles.

We determine the mass of sucrose, by the molar mass:

0.045 mol . 342 g/1mol = 15.4 g

4 0
3 years ago
Which rock would be the best source of the mineral garnet?
n200080 [17]
(4) slate because it is the strongest
5 0
3 years ago
Read 2 more answers
A compound contains 64 g of o and 8 g of h. what is the empirical formula for this compound?
kaheart [24]
The empirical formula is obtained by calculating the mole ratios of the atoms in the elements.
The number of moles =mass/ R.A.M
For hydrogen, no. of moles=8/1=8
For oxygen, no. Of moles=64/16=4
The tabular solution is attached.

6 0
2 years ago
Read 2 more answers
Other questions:
  • Summarize the rules for the allowable values of the four quantum numbers of an electron in an atom.
    13·1 answer
  • A. What will the sun turn into when it runs out of fuel for fusion? (5 points)
    13·2 answers
  • plants use carbohydrates to build things such as cellulose. How do plants acquire these building blocks to build Mass.
    11·1 answer
  • (1) When water vapor condenses, what happens to the clouds. EXPLAIN I WILL MARK YOU BRAINLIEST.
    11·1 answer
  • Which sample of matter is classified as a substance
    5·1 answer
  • PLEASE IN NEED HELP ASAP
    14·1 answer
  • What would be the mass percent of a NaOHsolution in which 11.6g of NaOHwere completely dissolved in 238.4g of water?
    14·1 answer
  • The strength of the gravitational attraction depends on the mass of the objects involved and the distance between them. The grav
    5·1 answer
  • Seaborgium mass number =
    9·1 answer
  • George Tomlin, RMA, has been working for several years in a specialty practice. He applies for a position closer to his home wit
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!