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
Nastasia [14]
3 years ago
11

List the celestial bodies from smallest to largest based on their actual size.

Chemistry
1 answer:
Usimov [2.4K]3 years ago
3 0
From largest to smallest they are: Universe, galaxy, solar system, star, planet, moon and asteroid.
You might be interested in
Compounds usually have the same properties as the bonds they are made from true or false
gavmur [86]
Well , I will say this is a false statement.
This is because compounds which were all made by the same bond have same physical properties but different chemical properties.

Chemical Properties :
How do the subtances react with ( water, acid,alkaline, base , gas like oxygen, etc. )

Physical Properties :
- Solubility of those subtances in (water or organic solvent )
- Electric Conductivity
- Melting or Boiling Point
- Density
- Smell (exp : Ammonia has pungent smell , Esters has fruity smell)
8 0
3 years ago
A chemical reaction can start when enough activation energy is added to the reactants. Do you think the activation energy for ch
e-lub [12.9K]
High, the enzymes in cells function or speed up reactions by lowering the activation energy.
7 0
3 years ago
Read 2 more answers
Measurements show that the energy of a mixture of gaseous reactants increases by during a certain chemical reaction, which is ca
TEA [102]
<h2>Endothermic and Exothermic</h2>

Explanation:

  • An exothermic response discharges heat and endothermic absorbs to heat
  • The whole of the enthalpies of the reactants is more prominent than the product, the response will be exothermic
  • In the product that the items side has a bigger enthalpy, the reaction is endothermic
  • An exothermic method  is one that emits heat. This heat is transferred to the environment
  • An endothermic reactions is one in which heat must be provided to the system from the environment
8 0
3 years ago
A weak monoprotic acid is titrated with 0.100 MNaOH. It requires 50.0 mL of the NaOH solution to reach the equivalence point. Af
larisa86 [58]

Explanation:

The given reaction is as follows.

        HA(aq) + NaOH (aq) \rightleftharpoons NaA(aq) + H_{2}O(l)

Hence, number of moles of NaOH are as follows.

        n = 0.05 L \times 0.1 M

           = 0.005 mol

After the addition of 25 ml of base, the pH of a solution is 3.62. Hence, moles of NaOH is 25 ml base are as follows.

             n = 0.025 L \times 0.1 M

                = 0.0025 mol

According to ICE table,

         HA(aq) + NaOH (aq) \rightleftharpoons NaA(aq) + H_{2}O(l)

Initial:     0.005 mol   0.0025 mol              0                  0

Change: -0.0025 mol  -0.0025 mol        +0.0025 mol

Equibm:   0.0025 mol    0                         0.0025 mol

Hence, concentrations of HA and NaA are calculated as follows.

          [HA] = \frac{0.0025 mol}{V}

        [NaA] = \frac{0.0025 mol}{V}

       [A^{-}] = [NaA] = \frac{0.0025 mol}{V}

Now, we will calculate the pK_{a} value as follows.

          pH = pK_{a} + log \frac{A^{-}}{HA}

       pK_{a} = pH - log \frac{[A^{-}]}{[HA]}

                  = 3.42 - log \frac{\frac{0.0025 mol}{V}}{\frac{0.0025}{V}}

                  = 3.42

Thus, we can conclude that pK_{a} of the weak acid is 3.42.

           

8 0
3 years ago
A piece of sodium metal can be described as?
vlada-n [284]

Answer:

A piece of sodium metal can be described as a pure substance and an element. ... Sodium is a soft, waxy, silvery, highly reactive metal. Sodium belongs to group 1 of the periodic table and it is highly abundant in the earth's crust. Sodium can also be found in various minerals such as rock salt, feldspars and sodalite.

Explanation:

here is short description that will help u 2 understand more

Thx

6 0
3 years ago
Read 2 more answers
Other questions:
  • A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pressure of 246 torr . Pure pe
    9·1 answer
  • What kind of chemical reaction does the chemical equation sodium + chlorine → sodium chloride represent?
    10·2 answers
  • How will you solve this?
    13·1 answer
  • Choose the correct statement about an atomic nucleus, compared to an atom as a whole. Choose the correct statement about an atom
    15·1 answer
  • In an atom, the first energy level can hold
    14·1 answer
  • What is the molarity of a solution containing 8.0 moles of solute in a 569 ml of solution?
    6·1 answer
  • How many grams of calcium are made up by 2.68 x 1023 atoms?
    5·1 answer
  • During a reaction with solids generally the _______ the size of each piece, the larger the total surface area. This means ______
    6·1 answer
  • 3. High-density polyethylene is made by polymerizing which starting molecule?
    5·1 answer
  • Look back at parts A and B to compare the properties of the unknown elements with the properties of the known
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!