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
Nostrana [21]
3 years ago
9

2.70 feet is the same as how many cm?

Chemistry
1 answer:
finlep [7]3 years ago
8 0

about 82.2 centimetres.
You might be interested in
If a container holds 1mol of hydrogen, 2.5mol of helium, and 2mol of oxygen at a total pressure of 4atm, what is the partial pre
nlexa [21]

Answer:

Partial pressure O₂  = 1.78 atm

Explanation:

We can apply the mole fraction to solve the question:

Moles of gas / Total moles = Partial pressure of gas / Total pressure

Total moles = 1 H₂ + 2.5 He + 2O₂ = 4.5 moles

2 mol O₂ / 4.5 mol = Partial pressure O₂ / 4 atm

(2 mol O₂ / 4.5 mol ) . 4 atm = Partial pressure O₂  → 1.78 atm

7 0
3 years ago
Read 2 more answers
N2 (g) + 3 H2 (g) → 2 NH3 (g)
shusha [124]

This problem is asking for the rate of disappearance of gaseous nitrogen, given the rate of appearance of ammonia and the chemical reaction. At the end, the result turns out to be -0.228 M/s.

<h3>Rates of appearance and disappearance</h3>

In chemical kinetics, one of the most relevant calculations are based on rates of appearance and disappearance of chemical species in a chemical reaction. This can be calculated via rate portions based on the stoichiometric coefficients in the reaction.

Thus, for this problem, one can write:

\frac{r_{N_2}}{-1} =\frac{r_{H_2}}{-3} =\frac{r_{NH_3}}{2}

Where the rate of appearance or disappearance is divided by the stoichiometric coefficient. Therefore, one can solve for the rate of disappearance of N2 with:

\frac{r_{N_2}}{-1} =\frac{r_{NH_3}}{2}\\\\r_{N_2}=\frac{r_{NH_3}*-1}{2}\\\\r_{N_2}=\frac{0.456M/s*-1}{2}\\\\r_{N_2}=-0.228M/s

Learn more about chemical kinetics: brainly.com/question/26351746

3 0
2 years ago
Hello! can a rock transform in to ANY type of rock? and why or why not
Oxana [17]

Answer:

yes it can

Explanation:

because, it depends on where the rock is, for example on a dessert it would Be cracked and things like that if near an eruption it would be the flamey black rock, and so on you get it

3 0
3 years ago
Why is the greenhouse effect important to life on earth
navik [9.2K]

Answer:

Because Greenhouse gases let the sun's light shine onto the Earth's surface, but they trap the heat that reflects back up into the atmosphere. And this way, they act like the glass walls of a greenhouse. This greenhouse effect also keeps the Earth warm enough to sustain life.

Explanation:

8 0
4 years ago
Read 2 more answers
Describe the contributions of the following scientists to our knowledge of atomic structure: J. J. Thomson, R. A. Millikan, Erne
lukranit [14]

J.J. Thomson discovered and identified the electron, which was the first subatomic particle to be discovered. R.A. Millikan determined the unit charge of the electron in 1909 with his oil drop experiment. Thus allowing for the calculation of the mass of the electron and the positively charged atoms. Ernest Rutherford overturned Thomson's model in 1911 with his well-known gold foil experiment in which he demonstrated that the atom has a tiny and heavy nucleus. James Chadwick discovered the Neutron in atoms.

5 0
3 years ago
Read 2 more answers
Other questions:
  • A 1.000 g sample of an unknown hydrate of cobalt chloride is gently dehydrated. The resulting mass is 0.546 g. The cobalt is iso
    10·1 answer
  • In which of the following is the solution concentration expressed in percent by volume
    14·2 answers
  • A solution has the same or different properties to the solute and solvent making it up
    9·1 answer
  • How many atoms are in a sample of 175 grams of sodium (na)?
    7·1 answer
  • What is the name of the ionic compound, NaOH
    14·1 answer
  • . A mixture of methane and air is capable of being ignited only if the mole percent of methane is between 5% and 15%. A mixture
    13·1 answer
  • Volume is the measure of
    6·1 answer
  • An acorn falls from a tree.Which of the following statements is true?
    8·2 answers
  • Describe a procedure to separate a mixture of sugar, black pepper, and pebbles.
    12·1 answer
  • Mrs. Hernandez brought her pet bird to school one day to find out what her students understood about forces. As the bird rested
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!