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sweet-ann [11.9K]
2 years ago
7

1, 2, or 3...help please

Chemistry
2 answers:
Mashcka [7]2 years ago
7 0

Answer:

molecular so number 3. ...

e-lub [12.9K]2 years ago
4 0
Number 3 I hope this helps
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In the chemical reaction below, calcium (Ca) and water (H2O) react to form calcium hydroxide (Ca(OH)2) and hydrogen gas (H2). Ca
lakkis [162]

Answer:

C.

Explanation:

The mass of the reactants should not change, in fact it would be equal because the only thing that changes is the form in which your products are in. The reactants will still have the same amount of mass from the products as no products were removed or added, the structure changed, the mass did not.

8 0
3 years ago
Need answer asap, will give brainliest!!!
Pavlova-9 [17]

D

Molecules consist of multiple atoms put together to create a new form.

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3 years ago
What is the gravitational potential energy of a 5 kg object that is 150
marusya05 [52]

Explanation:

Gravitational potential energy

= mgh

= (5kg)(9.81N/kg)(150m)

= 7357.5J.

5 0
2 years ago
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snow_tiger [21]
  1. Compounds are formed when two or more <u>elements</u> are chemically combined.
  2. When these elements are <u>chemically</u> combined, a new substance is formed with new chemical and physical <u>properties</u>.
  3. An element is a <u>pure</u> substance that cannot be separated into simpler substances by <u>physical</u> or chemical means.
  4. A compound is two or more elements <u>combined</u> chemically to produce a new substance.
  5. When two or more elements chemically combine, the compound has new properties, different from the chemical and physical properties of the <u>original</u> elements.

<h3>What is a chemical element?</h3>

A chemical element can be defined as a pure substance which comprises atoms that have the same atomic number (number of protons) in its nuclei and as such it is the primary constituent of matter.

Generally, some examples of a chemical element include the following:

  1. Argon.
  2. Sodium.
  3. Carbon.
  4. Oxygen.
  5. Hydrogen.
  6. Phosphorus
  7. Copper
  8. Aluminum
  9. Potassium
  10. Magnesium

<h3>What is a pure substance?</h3>

A pure substance can be defined as a single sample of matter that cannot be separated into other kinds of matter through the use of any physical or chemical separating technique because it has distinct chemical properties and a definite and constant composition.

Read more on pure substances here: brainly.com/question/2056940

#SPJ1

5 0
2 years ago
When two fluorine atoms bond together in F2, what type of covalent bond do they form?
makvit [3.9K]

When two  fluorine  atoms  bond  together  in f2  the  type of covalent  bond   do they  form is non-polar covalent   bond.


  Explanation

They are  two type of covalent bond.  that is non polar covalent bond and  polar covalent  bond.


Non polar  covalent  bond  is formed  when atoms share  a pair  of electrons  with each other  equally.

polar covalent  bond is bond formed when  atoms share  a pair   electrons unequally.


 F2  is a non polar  since  it is made  up of two  same atoms   which  has  the  same electronegativity, therefore equal number of electrons exist  in the  orbital overlap.


4 0
2 years ago
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