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
Alex787 [66]
3 years ago
15

Please help me with this question I will make you brainliest!! SCIENCE

Chemistry
1 answer:
schepotkina [342]3 years ago
5 0

Answer:

A skateboarder coming down the ramp.

When something is going up against ( up or <u><em>down</em></u> ) something it causes friction.

Hope this helps!

You might be interested in
What is the name of the compound H₃S₅?
Usimov [2.4K]
The compound name for H3S5 is hydrosulfide sulfanide sulfide
7 0
2 years ago
How many liters of Cl2 gas will you have if you are using 63 g of Na?
ELEN [110]

Answer:

You will have 19.9L of Cl2

Explanation:

We can solve this question using:

PV = nRT; V = nRT/P

<em>Where V is the volume of the gas</em>

<em>n the moles of Cl2</em>

<em>R is gas constant = 0.082atmL/molK</em>

<em>T is 273.15K assuming STP conditions</em>

<em>P is 1atm at STP</em>

The moles of 63g of Cl2 gas are -molar mass: 70.906g/mol:

63g * (1mol / 70.906g) = 0.8885 moles

Replacing:

V = 0.8885mol*0.082atmL/molK*273.15K/1atm

V = You will have 19.9L of Cl2

6 0
3 years ago
Democritus contributed to our understanding of the atom in which of the following ways?
Marianna [84]
I believe the answer is 3 - He hypothesized that all substances can be broken down into a smallest part called the atom. 
7 0
3 years ago
Read 2 more answers
The chemical formula for table sugar is c12h22o11. what can you tell from this formula
guajiro [1.7K]
The chemical formula for table sugar is C12H22O11.  From the formula, you can say that it is an organic molecule where in every molecule contains 12 atoms of carbon, 22 atoms of hydrogen and 11 atoms of oxygen.  There are 45 atoms in total in one molecule of sugar. 
6 0
3 years ago
Consider the reversible reaction.
Dmitry [639]

Answer:

Option D is correct.

The concentrations of both PCl₅ and PCl₃ are changing at equilibrium

Explanation:

Chemical equilibrium during a reversible chemical reaction, is characterised by an equal rate of forward reaction and backward reaction. It is better described as dynamic equilibrium.

This is because, the concentration of the elements and compounds involved in the reversible chemical reaction at equilibrium changes, but the rate of change of the reactants is always equal to the rate of change of products.

Hence, the concentration of reactants and products, such as PCl₅ and PCl₃ are allowed to change at equilibrium, but alas, the rate of forward reaction must always match the rate of backward reaction for the process to remain in a state of Chemical equilibrium.

Hope this Helps!!!

3 0
3 years ago
Other questions:
  • Ammonia, NH3, can be made by reacting nitrogen and hydrogen and the equation is N2 + 3H2 --&gt; 2NH3 How many moles of NH3 can b
    5·1 answer
  • Convert 32.56 km/hr into ft/hr
    12·1 answer
  • when 10.00 g of phosphorus reacts with oxygen, it produces 17.77 g of a phosphorus oxide. This phosphorus oxide was found to hav
    12·1 answer
  • 2. The formula for density is where m is mass and V is volume. If the volume inside the packet decreases, what would happen to t
    7·1 answer
  • Tony recorded data from his chemistry experiment in the following table. Sample Color Volume Temperature Mass A yellow 150 mL 20
    11·1 answer
  • Which of the following chemical formulas represents a molecule?<br><br><br> H2 CO2 SiO2 NH3
    11·2 answers
  • What did you observe<br> when heat was added to the penny with iodine?
    5·1 answer
  • Determine the number of molecules in 3.79 kilograms of the fictional compound Cs7(Cr5O3)4. Include the units, but do not write t
    9·1 answer
  • HCl + CaCO3 → CaCl2 + H2O + CO2 balanced equation<br><br><br> Pls Help i will give 100 Points!!!
    13·2 answers
  • Water is heated to a certain temperature in a large microwavable container. If a cup is used to remove some of the water from th
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!