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
kondor19780726 [428]
3 years ago
5

Niven wants to calculate the mass of mgo that is produced by burning of 28.0g of mg. What is the first step in nivens calculatio

n?
Chemistry
2 answers:
babymother [125]3 years ago
8 0

Answer: -

The experiment Niven is doing is burning of Mg.

The first step would be finding the molar mass of MgO

Atomic mass of Mg = 24 g

Atomic mass of Oxygen = 16 g

Molar mass of MgO = 24 x 1 + 16 x 1 = 40 g

The balanced chemical equation for this reaction is

2 Mg + O2 -- > 2MgO

From the balanced equation we see that

2 Mg gives 2 MgO

2 x24 g of Mg O gives 2 x 40 g of MgO.

28g of MgO gives \frac{2 x 40 gram x 28 gram }{2 x 24 gram}

= 46.66 g of MgO.

GrogVix [38]3 years ago
6 0

Answer:

The first step would be to write the balanced chemical reaction

Explanation:

Given:

Mass of Mg = 28.0 g

The first step is to write down the balanced chemical reaction depicting the stoichiometry

2Mg + O2 → 2MgO

Therefore, 2 moles of Mg produces 2 moles of MgO

i.e. the ratio of Mg:MgO = 1:1

Atomic mass of Mg = 24 g/mol

Moles of Mg reacted = \frac{28.0 g}{24 g/mol} = 1.167

This is equal to the moles of MgO produced = 1.167

Molar mass of MgO = 24 + 16 = 40 g/mol

Mass of MgO produced = 1.167 moles * 40 g/mol = 46.7 g

You might be interested in
What really is the Ebola virus?
Sloan [31]
The Ebola virus belongs to a family of viruses termed Filoviridae. Filovirus particles form long sometimes branched filaments of varying shapes, as well as shorter filaments , and may measure up to 14,000 nanometers in length with diameter of 80 nanometers. Viral particles contain one molecule of single stranded RNA enveloped in a lipid membrane. New viral particle bud from the surface of their host cell. Although Ebola virus was only discovered in 1976, it is an ancient virus and is thought to have split from other viruses thousands of years ago.
7 0
3 years ago
How are some mutations similar? Provide examples.
Hatshy [7]

Answer:

Mutations can be caused by high-energy sources such as radiation or by chemicals in the environment. They can also appear spontaneously during the replication of DNA. Mutations generally fall into two types: point mutations and chromosomal aberrations. In point mutations, one base pair is changed. A single mutation can have a large effect, but in many cases, evolutionary change is based on the accumulation of many mutations with small effects. Mutational effects can be beneficial, harmful, or neutral, depending on their context or location. Most non-neutral mutations are deleterious.

Have an awesome day friend! <3

3 0
3 years ago
Read 2 more answers
Which element(s) are not balanced in this equation ?
Alekssandra [29.7K]
Only the Fe is unbalanced.
:)
3 0
3 years ago
Read 2 more answers
Please help!!!!!!!!!!
STatiana [176]
Phosphorus - P - Protons = 15, Electrons = 15, Neutrons = 16 - Non-Metal

Lithium - Li - Protons = 3, Electrons = 3, Neutrons = 4 - Metal

Nitrogen - N - Protons = 7, Electrons = 7, Neutrons = 7 - Non-Metal

Copper - Cu - Protons = 29, Electrons = 29, Neutrons = 34 - Metal

Neon - Ne - Protons = 10, Electrons = 10, Neutrons = 10 - Non-Metal

sorry i don’t know about the other questions but i thought i could help with the table!

Additional Info:

number of protons = atomic number

number of electrons = atomic number

number of neutrons = mass number - atomic number
3 0
3 years ago
What did you include in your hypothesis? Check all that apply.
Tcecarenko [31]

The following observation would be included in a hypothesis: a connection between type of material and thermal energy transfer is developed (option C).

<h3>What is a hypothesis?</h3>

Hypothesis is a tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and/or experimentation.

The hypothesis is regarded as an educated guess because it predicts the possible outcome of an experiment.

The hypothesis is a statement that relates the independent variable of the experiment with the measured or dependent variable.

Therefore, the following observation would be included in a hypothesis: a connection between type of material and thermal energy transfer is developed.

Learn more about hypothesis at: brainly.com/question/13025783

#SPJ1

5 0
1 year ago
Other questions:
  • A compound contains 39.0% potassium, 1.01% hydrogen, 12.0% carbon and 47.9% oxygen. Find its empirical formula
    11·1 answer
  • What poisonous gas is produced by uranium in rocks underneath a house?
    5·1 answer
  • Alguém poderia me explicar como balancear uma equação
    5·1 answer
  • A - ion (negative ion, one with extra negative charge)?
    8·1 answer
  • If predators A and B prey upon the same species and predator A is eliminated, the population of predator B will likely _________
    13·2 answers
  • The ideal gas law equation is: PV = nRT
    11·1 answer
  • Please help me with this questions
    10·1 answer
  • Why do solids maintain their volume and shape? cause-effect
    9·2 answers
  • A certain reaction at equilibrium has more moles of gaseous products than of gaseous reactants.(b) Write a statement about the r
    10·1 answer
  • If one or more nucleotide pairs are deleted from a dna strand, this is known as a:_________
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!