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
Inessa [10]
3 years ago
15

What causes objects to move or stay still? Claim Reasoning: Evidence:

Chemistry
2 answers:
kari74 [83]3 years ago
7 0

Answer:

For an object to move, there must be a force. A force is a push or pull that causes an object to move, change direction, change speed, or stop. Without a force, an object that is moving will continue to move and an object at rest will remain at rest.

Explanation:

Alex777 [14]3 years ago
7 0

Answer:

something must force it to move for it to move and fro it to stay still just let it be

Explanation:

You might be interested in
Define: 1. acids, 2. strong acids, 3. weak acids.
Reika [66]
H^+ = acid
OH^- = alkaline

Acids have a pH of below 7. The lower the number, the strongest the acid.
4 0
3 years ago
Read 2 more answers
What is the first step when factoring the trinomial ax^2+bx+c
dlinn [17]
This is all no chemistry but the answer is C
7 0
3 years ago
Gallium is produced by the electrolysis of a solution made by dissolving gallium oxide in concentrated NaOH ( aq ) . Calculate t
Sedbober [7]

Answer:

Approximately 6.30\times 10^{-3}\;\rm mol.

Explanation:

The gallium here is likely to be produced from a \rm NaGaO_2\, (aq) solution using electrolysis. However, the problem did not provide a chemical equation for that process. How many electrons will it take to produce one mole of gallium?

Note the Roman Numeral "\mathtt{(III)}" next to \rm Ga.  This numeral indicates that the oxidation state of the gallium in this solution is equal to +3. In other words, each gallium atom is three electrons short from being neutral. It would take three electrons to reduce one of these atoms to its neutral, metallic state in the form of \rm Ga\, (s).

As a result, it would take three moles of electrons to deposit one mole of gallium atoms from this gallium \mathtt{(III)} solution.

How many electrons are supplied? Start by finding the charge on all the electrons in the unit coulomb. Make sure all values are in their standard units.

t = \rm 80.0\; min = 80.0\; min \times 60\;s \cdot min^{-1} = 4800\; s.

Q = I \cdot t = \rm 0.380 \; A \times 4800 \; s = 1.824\times 10^3\; C.

Calculate the number of electrons in moles using the Faraday's constant. This constant gives the size of the charge (in coulombs) on each mole of electrons.

\begin{aligned} n(\text{electrons}) &= \frac{Q}{F} \cr &= \rm \dfrac{1.824\times 10^3\; C}{96485.332\; C \cdot mol^{-1}}\cr &\approx \rm 1.89\times 10^{-2}\; mol \end{aligned}.

It takes three moles of electrons to deposit one mole of gallium atoms \rm Ga\, (s). As a result, \rm 1.89\times 10^{-2}\; mol of electrons would deposit \displaystyle \rm \frac{1}{3}\times 1.89\times 10^{-2}\; mol \approx 6.30\times 10^{-3}\; mol of gallium atoms \rm Ga\, (s).

8 0
2 years ago
Describe the difference between pure substance and mixtures ( give an example each)
kondaur [170]

Answer:

a pure substance consists only of one element or one compound

a mixture consists of two or more different substances, not chemically joined together.

examples:

pure substance : Hydrogen gas - Diamond - Gold metal.

mixture : water and oil - mixtures of sand and water - trail mix

Explanation:

4 0
2 years ago
Read 2 more answers
A gas occupies a volume of 160 ml at 36° C and 970mm Hg. What is the volume at STP?
igor_vitrenko [27]

Answer:

I'm sorry I just need points

Explanation:

7 0
2 years ago
Other questions:
  • In which of the following choices is the oxidation number incorrect?
    8·1 answer
  • Which element, if combined with chlorine, will have the greatest attraction for the chlorine electrons?
    13·2 answers
  • How does an atom differ from a molecule? In what ways are they similar?
    13·1 answer
  • What is the role of critical thinking in scientific process
    8·2 answers
  • The main function of the circulatory system is to distribute ____ with ____ and ____ throughout the body.
    7·1 answer
  • If a student rode his bike 102 hectometers, how many kilometers did he ride?
    12·1 answer
  • Suppose 50.0 grams of compound AB reacts completely with 100.0 grams of compound CD, how many grams of products will be formed,
    5·1 answer
  • In this molecule, what type of bond is found between the oxygen and hydrogens?
    8·1 answer
  • Which step accurately describes how to measure the final burette volume?
    11·2 answers
  • An exploratory robot was sent to the planet mars. The gravity on mars is weaker than the gravity on earth. Compared to the mass
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!