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
Marrrta [24]
3 years ago
13

A metal (M) forms an oxide with the formula MO. If the oxide contains 7.17 % O by mass, what is the identity of the metal?

Chemistry
1 answer:
Nataly_w [17]3 years ago
7 0

The metal is lead, Pb.

One unit of the oxide contains one atom of O (16.00 u).

∴ Mass of oxide = 16.00 u O × (100 u MO/7.17 u O) = 223.15 u MO

Mass of M = mass of MO – mass of O = 223.15 u -16.00 u = 207.2 u

The only element with an atomic mass of 207.2 u is lead (Pb) and the formula of the oxide is PbO.

You might be interested in
Plz help me with this problem
Ilya [14]

Answer:

4feet

Explanation:

Because when he moves he only goes 4 miles every time I

6 0
3 years ago
Read 2 more answers
At what pH range bayer process operate? and why?
Novosadov [1.4K]

Explanation:

Bayer process is industrial method of the refining of the bauxite to produce alumina which is aluminum oxide.

As alumina is amphoteric in nature, it exhibits a higher solubility at both the extremes of pH range, it is possible to dissolve alumina in low as well as in high pH solutions.

Dissolution of the alumina at high pH is well recognized in Bayer process. Bauxite is digested in very <u>high pH solution (> 13)  of alkali</u> like sodium hydroxide at temperature of about 150–250°C and pressure at 20 atm. <u>This is done so that the dissolved alumina is separated from rest of insoluble bauxite minerals. </u>

3 0
3 years ago
Our Sun will eventually turn into a red giant and, finally, a white dwarf. Use the Hertzsprung-Russell diagram to describe how t
ollegr [7]

Answer:

Most stars are rather simple things. They come in a variety of sizes and temperatures, but the great majority can be characterized by just two parameters: their mass and their age. (Chemical composition also has some effect, but not enough to change the overall picture of what we will be discussing here. All stars are about three-quarters hydrogen and one-quarter helium when they are born.)

7 0
3 years ago
A piece of wood and a piece of steel are at the same temperature; however, the steel feels hotter. This is because the steel has
Anika [276]

B- Greater thermal conductivity

6 0
3 years ago
Read 2 more answers
According to the big bang theory, which statements are accurate about how the universe came to be? Check all that apply.
asambeis [7]

The term Big Bang defines that the Universe has expanded from the ancient hot and thick primary situation at some fixed time in the past.

Big Bang theory refers to the origin of the Universe. In the beginning, universe is very heavy and small hot ball of matter. It was a point no bigger than the head of a pin when all the things squished with each other and universe is expanded with huge explosion of energy. Due to expansion, it is cooled and results in the formation of Stars and galaxies. After sometime, atoms formed like helium and hydrogen.

Thus, statement (1), (3) and (4) is correct whereas statement (2) and (5) is incorrect.

7 0
3 years ago
Read 2 more answers
Other questions:
  • What do bacteria need to reproduce?
    13·1 answer
  • What do scientist measure by using a triple-beam balance
    11·1 answer
  • Jeremy left his bike outside overnight. When he woke up in the morning, there were water drops on the seat. When he went to ride
    12·1 answer
  • The combustion of carbohydrates and the combustion of fats are both exothermic processes, yet the combustion of carbohydrates is
    12·1 answer
  • Each of the following values was read on an instrument of measuring device. In each case the last digit was estimated. Tell what
    10·1 answer
  • How could you measure the average kinetic energy of a group of particles
    5·2 answers
  • The average mass of a nitrogen atom is 14.006 amu from the two isotopes with the following data: 14N-14.00307 amu with 0.9963 fr
    6·1 answer
  • An element found in groups 3-12 of the periodic table is classified as a[n]
    9·1 answer
  • Colour of crushed chalk + Iodine solution​
    11·1 answer
  • 3. What factors affect solubility?<br><br>can anyone help its due today ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!