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
Mrac [35]
2 years ago
7

Dana wants to determine the molar mass of magnesium hydroxide, Mg(OH)2. Which calculation should she use?

Chemistry
2 answers:
AVprozaik [17]2 years ago
7 0

Answer:

C is correct

Explanation:

The molar mass is the total mass of a compound, that means, you need to add the mass of every single atom in the formula. In this case, you have one atom of Magnesium, two atoms of Oxygen and two atoms of Hydrogen, that is the reason why you need to multiply molar mass x 2 in the case of Oxygen and Hydrogen

aleksandr82 [10.1K]2 years ago
3 0
Answer C. is correct:

(molar mass of Mg) + (2 x molar mass of O) + (2 x molar mass of H)

:-) ;-)
You might be interested in
Standard hydrogen electrode acts as both anode and cathode.Explain.​
Vlad [161]

Answer:

A Standard Hydrogen Electrode is an electrode that scientists use for reference on all half-cell potential reactions. The value of the standard electrode potential is zero, which forms the basis one needs to calculate cell potentials using different electrodes or different concentrations. It is important to have this common reference electrode, just as it is important for the International Bureau of Weights and Measures to keep a sealed piece of metal that is used to reference the S.I. Kilogram.

8 0
2 years ago
Read 2 more answers
Chemistry, need answer ASAP!! 50 points and i'll mark brainliest if correct! ^w^
pishuonlain [190]

Answer:

615 g

Explanation:

In order to convert from moles of any given substance into grams, we have to use said substance's <em>molar mass</em>, as follows:

  • # moles * Molar mass = grams of substance.

Thus, we now <u>calculate the molar mass of beryllium iodide</u>, BeI₂, using the <em>molar masses of the elements</em>:

  • Molar Mass of BeI₂ = Molar Mass of Be + (Molar Mass of I)*2 = 262.821 g/mol

Finally we <u>calculate how many grams are there in 2.34 moles of BeI₂</u>:

  • 2.34 mol * 262.821 g/mol = 615 g
4 0
2 years ago
Is air an element, compound or mixture? explain your answer
emmainna [20.7K]

It is a mixture because the compounds that make up air e.g. oxygen (o2), Carbon dioxide (co2) and the most important Nitrogen which is an element and makes up 78.09% of air are not chemically bound in the way that compounds are because they can be separated easily and there has been no change in state to any of the compounds or elements in air!hope this helpful!

3 0
3 years ago
Read 2 more answers
A Brønsted-Lowry acid Question 9 options: A) has a lower pH than vinegar. B) is any species that donates a proton. C) is any spe
rusak2 [61]

Answer:

B) is any species that donates a proton.

7 0
3 years ago
Write the formula for the conjugate base for the following acids. <br>Thank you ​
Llana [10]

Answer:

See the answer and explanation below , please.

Explanation:

A conjugate base is defined as that formed after an acid donates its proton.

For each article, a continuation of the conjugate bases (highlighted in bold), for dissociation in water:

a) HF + H20 --> F- + H30+      

b) H20+ H20 --> OH-  + H30+

C)H2PO3-  + H20--> HPO3 2-   + H30+

d) HSO4- + H20 -->  SO4 2- + H30+

E) HCL02 + H20 --> CLO02 -   + H30+

7 0
3 years ago
Read 2 more answers
Other questions:
  • A 10.0 mL syringe contains 0.10 g of nitrogen gas at 0.0 degrees Celsius. What is the pressure inside the syringe?
    7·1 answer
  • What is the [OH^+] ina solution that has a pH=4.02
    14·1 answer
  • What are four physical properties of aluminum foil?
    14·2 answers
  • What are 3 things that microwaves do
    12·1 answer
  • Whag is the chemical formula of carbon tarta chlorine​
    15·1 answer
  • In which example is the force of friction the greatest?
    10·2 answers
  • Given the problem below, what would the first step be in solving it?
    5·1 answer
  • The lower the pressure, the lower a liquid’s boiling point is. Water actually boils much faster at the top of a mountain where a
    8·1 answer
  • Given 3.5M and 10.5ml of zn(oh)2 find the molarity of nitric acid given 15.0 ml of nitric acid
    14·1 answer
  • Your patient gets a prescription for 51.5 mcg (micrograms, μg) of digoxin in liquid form. The label reads 0.0250 mg/mL. How many
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!