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
Murrr4er [49]
3 years ago
15

The phases of the moon are caused by the changing positions of the Earth and the Moon in relation to the Sun.

Chemistry
2 answers:
Misha Larkins [42]3 years ago
7 0
I do believe the answer would be B. the flashlight represents the sun, the basketball represents the earth and the smaller softball would be the moon.

hope this helps
jok3333 [9.3K]3 years ago
3 0

It's B! Just took the SI quiz.

You might be interested in
Please help
Vika [28.1K]

Answer:

1 atom of carbon on the reactant side (CH₄ is methane, 1 carbon, 4 hydrogen).

1 atom of carbon on product side (Law of Conservation of energy proves this).

4 hydrogen on reactant side (CH₄ is methane, 1 carbon, 4 hydrogen).

4 hydrogen on product side (Again, the Law of Conservation of energy proves this)

4 oxygen atom on the reactant side (2O₂ means two diatomic molecules, or two oxygen molecules of 2 atoms each).

4 oxygen atoms on the product side (Law of Conservation of energy).

2 molecules of oxygen on the reactant side.

2 molecules of water on the product side

Yes, the chemical equation is balanced. The amount of atoms is the constant on both the reactant and product side.

A Ionic bond is chemical bond between two oppositely charged ions because of the transfer of valence electrons between them.

A covalent bond is a chemical bond in which two or more atoms share electrons between them. They can also form polar covalent bond or non-polar covalent bonds (Although that depends on the electronegativities of the atom).

The bond of a carbon dioxide molecule is covalent bond (Polar covalent bond if you've learned that yet)

Potassium Fluoride (KFl) form an ionic bond.

2Al₂O₃ --> 4Al + 3O₂

A reducing agent loses electrons while and oxidizing agent gains electrons.

In an endothermic reaction, the total bond energy in the reactants is greater than the bond energy of products so energy is absorbed by the reaction. (For an endothermic reaction, more energy needs to be absorbed than released).

8 0
3 years ago
A husband and a wife have two sons one boy has a straight thumb while the other has a bent thumb what causes the difference
Usimov [2.4K]

Answer:

Double/Triple joints

Explanation:

Double/Triple joints is when you can move a body part (thumb) farther than normal. (I think)

3 0
3 years ago
Se disuelven 10 g de acido carbónico H2CO3 en 150 g de agua. Determina la concentración % m/m de esa disolución?
sergey [27]

The question is: 10 g of carbonic acid H2CO3 are dissolved in 150 g of water. Determine the% m / m concentration of that solution?

Answer: The% m / m concentration of that solution is 6.66%.

Explanation:

Given: Mass of solute = 10 g

Mass of solvent = 150 g

Formula used to calculate the %m/m is as follows.

Percent (m/m) = \frac{mass of solute}{mass of solvent} \times 100

Substitute the values into above formula as follows.

Percent (m/m) = \frac{mass of solute}{mass of solvent} \times 100\\= \frac{10 g}{150 g} \times 100\\= 6.66%

Thus, we can conclude that the% m / m concentration of that solution is 6.66%.

6 0
3 years ago
The reactant atoms are copper, hydrogen, nitrogen, and oxygen. Which reactant atom was oxidized in the reaction?
SCORPION-xisa [38]

Answer:

C. copper.

Explanation:

  • The atom which loses electrons (its oxidation sate be more positive) is the atom that is oxidized.
  • While, the atom which gains electrons (its oxidation sate be more negative) is the atom that is reduced.

  • Nitrogen:

It is oxidation sate is changed from (+5) in the reactants (NO₃⁻) to (+4) in the products (NO₂). N gains 1 electron

So, it is reduced.

  • Oxygen:

It is oxidation sate is the same (-2) in the reactants (NO₃⁻) and (-2) in the products (NO₂).

<em>So, it is neither be oxidized nor reduced.</em>

<em></em>

  • Copper:

It is oxidation sate is changed (0) in the reactants (Cu) to (+2) in the products (Cu²⁺). Cu loses 2 electrons.

<em>So, it is oxidized.</em>

<em></em>

  • Hydrogen:

It is oxidation sate is the same (+1) in the reactants (H⁺) and (+1) in the products (H₂O).

<em>So, it is neither be oxidized nor reduced.</em>

<em></em>

5 0
4 years ago
Which type of rock forms from the fragments of other rocks?
lorasvet [3.4K]
Sedimentary Rocks.

The other types of rocks are igneous, formed by magma, and metamorphic, formed from other rocks changed through heat and pressure.
8 0
4 years ago
Other questions:
  • the air we breathe is approximately 21% oxygen.atypical breath has a volume of 450 ml.how many grams of O2 are in a breath of ai
    12·1 answer
  • When phosphorus (P) and bromine (Br) bond, what kind of bond would happen?
    5·1 answer
  • After chlorofluorocarbons we’re banned, which class of chemicals was used in their place
    12·2 answers
  • Explain why the following chemical equation represents a Lewis acid-base reaction. H+ + NH3 —&gt;NH4+
    5·1 answer
  • For Questions 1 through 4 - Consider a solution prepared by combining 45.0 g of BaCl2 with enough water to prepare a 750.0 mL of
    14·1 answer
  • When 2.935 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 9.920 grams of CO2 and 2.031 grams of H
    8·1 answer
  • draw the resonance struture of the three possible carbocation intermediates to show how a methoxyl ( -OCH3) directs bromination
    15·1 answer
  • A blood droplet has a width of 42mm and length of 69mm. What is the angle of impact?
    5·2 answers
  • Please do not ignore, I don’t know how to find the last part so can you please explain it to me? I’m having trouble with that
    14·2 answers
  • Help please! asap!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!