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
OleMash [197]
3 years ago
14

What is the molarity of a solution that is made by adding 57.3 g of MgO to 500.0 mL of solution?

Chemistry
1 answer:
kifflom [539]3 years ago
0 0

Answer:

2.843 M

Explanation:

Molarity = moles / volume

<u>Milliliters to liters:</u>

500 mL <u>= .500 L</u>

<u>Grams to moles:</u>

MgO molar mass = 16.00 + 24.31 = 40.31 g/mol

57.3 g x 1 mol / 40.31 g = <u>1.421 mol</u>

<u>Molarity:</u>

1.421 mol / .500 L =  2.843 M

You might be interested in
Red #40 has an acute oral LD50 of roughly 5000 mg dye/1 kg body weight. This means if you had a mass of 1 kg, ingesting 5000 mg
FrozenT [24]

Answer:

350 g dye

0.705 mol

2.9 × 10⁴ L

Explanation:

The lethal dose 50 (LD50) for the dye is 5000 mg dye/ 1 kg body weight. The amount of dye that would be needed to reach the LD50 of a 70 kg person is:

70 kg body weight × (5000 mg dye/ 1 kg body weight) = 3.5 × 10⁵ mg dye = 350 g dye

The molar mass of the dye is 496.42 g/mol. The moles represented by 350 g are:

350 g × (1 mol / 496.42 g) = 0.705 mol

The concentration of Red #40 dye in a sports drink is around 12 mg/L. The volume of drink required to achieve this mass of the dye is:

3.5 × 10⁵ mg × (1 L / 12 mg) = 2.9 × 10⁴ L

8 0
3 years ago
Which statement accurately compares the trends in atomic number and atomic mass in the periodic table
Tresset [83]

Answer: is C

Explanation:

Both the atomic mass and the atomic number increase from left to right

6 0
3 years ago
Read 2 more answers
List 3 categories of properties used to classify solids.
NNADVOKAT [17]

Answer : Broadly solids are divided into three categories;

i) Crystalline solids have a regular definite structure, in which the particles pack in a repeating pattern from one edge of the solid to the other.

ii) Amorphous solids have a random structure, with little unorganized pattern long-range order.

iii) Polycrystalline solids are those where an aggregate which consists of a large number of small crystals or grains in which the structure is regular, but the crystals or grains are found to be arranged in a random fashion.

Also solids can be divided into 3 more categories according to their bonds;

i) Covalent solids, like diamond, which forms crystals that can be viewed as a single giant molecule made up of an almost endless number of covalent bonds.

ii) Ionic solids are basically salts, such as NaCl, in which the molecules are held together by the strong force of attraction between ions of opposite charge.

iii) Metallic solids are found in metals which have the force of attraction between atoms of metals, such as copper and aluminum, or alloys, such as brass and bronze, are metallic bonds.


8 0
3 years ago
Read 2 more answers
describe the independent and dependent variables in this experiment then describe the other variables that need to be controlled
uranmaximum [27]
independent variable is being controlled and the dependent variable is being tested and being easured in a scientific experiment
3 0
2 years ago
Help me with 4,5 plz
Helen [10]
The answer to 4 is A.                                              
The answer to 5 is C.
7 0
3 years ago
Other questions:
  • The pH of a solution is measured eight times by one operator using the same instrument. She obtains the following data: 7.15, 7.
    11·1 answer
  • I WILL MARK BRAINLIEST
    12·1 answer
  • Rank the following aqueous solutions from highest to lowest freezing point: 0.1 m FeCl3, 0.30 m glucose (C6H12O6), 0.15 m CaCl2.
    14·1 answer
  • If I have 5,000g of sodium, how much sodium sulfide can be made?
    8·2 answers
  • Prions are proteins with the ability to generate more prions by causing other proteins to misfold into a similar shape. Since pr
    14·1 answer
  • Identify the most oxidized compound. Group of answer choices CH3CH2CHO CH3CH2CH3 CH3CH2CH2OH CH3CH2OCH3 CH3CH2COOH
    8·1 answer
  • How does energy from Earth’s interior affect surface changes?
    9·2 answers
  • What is one difference between an electron and a neutron?
    5·1 answer
  • Which explains how coolers work?
    13·1 answer
  • You are given the balanced chemical equation below. If you start this chemical reaction with 0.53 moles of CH4 and 1.5 moles of
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!