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
uranmaximum [27]
1 year ago
12

What is the mass (in ng) of 1.23 moles of nickel?

Chemistry
1 answer:
Ludmilka [50]1 year ago
3 0

Answer:

7.22 x 10¹⁰ ng Ni

Explanation:

To find the mass of nickel, you need to (1) convert moles to grams (via atomic mass from the periodic table) and then (2) convert grams to nanograms. These ratios need to be multiplied by each other, starting with the given value. It is important to arrange the conversions/ratios in a way that allows for the cancellation of units (the desired unit should be in the numerator). The final answer should have 3 sig figs to reflect the given value (1.23).

Atomic Mass (Ni): 58.693 g/mol

1 gram = 1 x 10⁹ nanograms

1.23 moles Ni             58.693 g               1 x 10⁹ ng
----------------------  x  ----------------------  x  ---------------------  =  7.22 x 10¹⁰ ng Ni
                                     1 mole                       1 g

You might be interested in
Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. An industrial ch
mamaluj [8]

Answer:

Explanation:

From the given information:

The equation for the reaction can be represented as:

2SO_2 + O_2 \to 2SO_3

The I.C.E table can be represented as:

                     2SO₂              O₂                   2SO₃

Initial:             14                  2.6                     0

Change:        -2x                -x                      +2x

Equilibrium:   14 - 2x          2.6 - x                2x

However, Since the amount of sulfur trioxide gas to be 1.6 mol.

SO₃ = 2x,

then x = 1.6/2

x = 0.8 mol

For 2SO₂; we have 14 - 2x

= 14 - 2(0.8)

= 14 - 1.6

= 12.4 mol

For O₂; we have 2.6 - x

= 2.6 - 1.6

= 1.0 mol

Thus;

[SO₂] = moles / volume = ( 12.4/50) = 0.248 M ,

[O₂] = 1/50 = 0.02 M ,  

[SO₃] = 1.6/50 = 0.032 M

Kc = [SO₃]² / [SO₂]² [O₂]

= ( 0.032²) / ( 0.248² x 0.02)

= 0.8325

Recall that; the equilibrium constant for the reaction 2SO_2 + O_2 \to 2SO_3 = 0.8325;

If we want to find:

SO_2 + \dfrac{1}{2}O_2 \to SO_3

Then:

K_c = (0.8325)^{1/2}

\mathbf{K_c = 0.912}

Since no temperature is given to use in the question, it will be impossible to find the final temperature of the mixture.

7 0
3 years ago
What is used up in and stops a chemical reaction?
CaHeK987 [17]
B - limiting reactant
6 0
2 years ago
Read 2 more answers
Number of protons for oxygen 16
DanielleElmas [232]
8 protons in oxygen bc it has an atomic number of 8
5 0
3 years ago
Question 1 of 10 What is molarity a measurement of? O A. The volume of liquid containing a dissolved substance B. The grams of a
Nuetrik [128]

Answer:

D

Explanation:

D. The number of moles of a dissolved substance

7 0
3 years ago
Read 2 more answers
What is more likely to happen if wetlands are drained?
Rudik [331]
Animals and Plants won't have a place to live, get food and resourses. Some organisms won't have anyshelter, because some live in the water. 
8 0
3 years ago
Other questions:
  • 5. How many significant figures are in the measurement +0.500 mg?
    7·1 answer
  • Wine is 12 % (by volume) alcohol. How many milliliters of alcohol are in a 0.750- L bottle of wine?
    5·1 answer
  • The thin outer layer of Earth, called the crust, contains only 0.50 percent of Earth's total mass and yet is the source of almos
    14·1 answer
  • Alka seltzer and water from
    11·1 answer
  • Suppose you are working with a NaOH stock solution but you need a solution with a lower concentration for your experiment. Calcu
    5·1 answer
  • The vapor pressure of ethanol, CH3CH2OH, at 35.0 °C is 13.67 kPa. If 2.03 g of ethanol is enclosed in a 2.50 L container, how mu
    10·1 answer
  • ________ is the force that keeps planets in orbit around the sun
    6·2 answers
  • Which of the following is not a renewable source of energy?
    9·2 answers
  • A student drew atomic models of four elements. Based on these drawings, which element is the least reactive?.
    12·1 answer
  • A solution of saline may contain 1.81 mol of sodium chloride (NaCl). How many sodium atoms are present in the solution?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!