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
Nataliya [291]
3 years ago
10

Which statement is false?

Chemistry
1 answer:
mash [69]3 years ago
6 0

Answer: Energy from the combustion of gas is cleaner because it does not produce greenhouse gases like carbon dioxide and water is false

Explanation: The reason is because the energy from the combustion of gas is never clean

You might be interested in
Do constellations appear the same in Northern and Southern Hemisphere? Why or Why Not?
Mashcka [7]
The visible constellations<span> are definitely different between the Northern and Southern Hemispheres. In general, at any given point on Earth, only around 50% of the sky will be visible. We can understand this by considering the atmosphere as a sphere around the earth. The sky any person can view at one point can be compared to a giant dome equal to half of the sphere. And because the Earth rotates, the dome we can see changes, unless one is sitting directly on the North or South Pole.</span>
5 0
4 years ago
1.883 Grams of copper reacted with excess sulfur to form an unknown Copper sulfide. The reaction creates 2.308 grams of an unkno
rosijanka [135]

Answer:

um it is most likely copper

Explanation:

8 0
3 years ago
What is the total number of atoms in one unit (molecule or formula unit) of nacl?
snow_tiger [21]
<span>One mol of NaCl (6.02 x1023 formulas) has a mass of 58.44 g. Concept 2. The relation between molecular (formula) mass and molar mass. To obtain one mole of copper atoms (6.02 x 1023 atoms), weigh out 63.55 g copper.</span>
6 0
3 years ago
An electrical current only moves through a ____ circuit.
Ksju [112]

Answer:

Closed

Explanation:

8 0
3 years ago
Read 2 more answers
At a certain temperature the vapor pressure of pure heptane (C_7 H_16) is measured to be 170. torr. Suppose a solution is prepar
steposvetlana [31]

Explanation:

The given data is as follows.

       Pressure (P) = 170 torr,      mass of heptane (m) = 86.7 g

First, we will calculate the number of moles as follows.

          No. of moles = \frac{mass}{\text{molar mass}}

                        = \frac{86.7 g}{100 g/mol}

                        = 0.867 mol

Now, the number of moles of CH_{3}COBr are calculated as follows.

     No. of moles =  \frac{mass}{\text{molar mass}}

                           =  \frac{125}{122.9}    

                           = 1.07

Therefore, mole fraction of heptane will be calculated as follows.

     Mole fraction = \frac{\text{moles of heptane}}{\text{total moles}}

                           = \frac{0.867}{0.867 + 1.07}

                           = \frac{0.867}{1.937}

                           = 0.445

Now, we will calculate the partial pressure of heptane as follows.

            P_{A} = x_{A}P^{o}_{A}

                 = 170 \times 0.445      

                 = 75.65 torr

Thus, we can conclude that the partial pressure of heptane vapor above this solution is 75.65 torr.

8 0
4 years ago
Other questions:
  • 2NO(g) N2(g) + O2(g); Keq = 2.1 × 1030 What does the value of the equilibrium constant indicate?
    6·1 answer
  • After mixing an excess PbCl2 with a fixed amount of water, it is found that the equilibrium concentration of Pb2 is
    12·1 answer
  • There are three different dichloroethylenes (molecular formula C2H2Cl2), which we can designate X, Y, and Z. Compound X has no d
    10·2 answers
  • If it takes 54ml of 0.1 m naoh to neutralize 125 ml of a hcl solution with unknown concentration, what is the concentration of t
    13·1 answer
  • Which of the following is a single replacement reaction?Fe2O3 + 3H2O yields 2Fe(OH)3
    10·2 answers
  • What are the coefficients needed to balance this chemical reaction to show that matter is conserved?
    9·1 answer
  • GIVING BRAINLIEST! Please answer with 5-7 sentences.
    9·2 answers
  • Are all forms of energy as useful to us or can we only use certain forms at home, in our cars, or computers?
    6·1 answer
  • This woman is riding a bicycle down a hill at a constant speed and in a straight line.
    14·1 answer
  • In order to dissolve a chemical sample in a recrystallization solvent, add the room-temperature solvent Choose... in an Erlenmey
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!