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lukranit [14]
4 years ago
10

Lenny accidentally drops his matchbox car into a graduated cylinder. The car has a mass of 10 grams and the water level in the c

ylinder rises from 41 ml to 46 ml. Determine the density of the matchbox car. The formula for density is D = m/v.
Chemistry
1 answer:
Readme [11.4K]4 years ago
3 0

Answer:

The answer is 2

Explanation:

I got it right in the k12 test :)

 teehee

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How many liters of solution will contain 1.5 moles of CaCl2 if the solution is 6.0 M CaCl2?
sashaice [31]

Answer:

0.25

Explanation:

volume= number of moles over concentration

hence v=1.5/6

6 0
3 years ago
Which substances were ionic?
horsena [70]
<h3>Sodium chloride  and Sodium bicarbonate are ionic substances</h3><h3>Further explanation </h3>

Atoms have different stability. Unstable atomic atoms will try to form stable electron configurations like those of noble gases. Where noble gases have the number of outer electrons 2 or 8

The formation of electron configurations such as noble gases can be done by sharing electrons with covalent bonds or hand over electrons with ionic bonds

Generally, ionic bonds occur in metals and nonmetallic elements.

While covalent bonds occur because of the use of shared electrons. In general, this bond occurs between nonmetallic elements, which has the same electron attraction

Characteristics of ionic compounds include: solid / crystalline form, soluble in water, conduct electricity

Let see the answer choices

  • Oil

It is a covalent compound because part of the hydrocarbon,  a liquid that forms a bond between elements C, H and O, and does not dissolve in water (floats on water)

  • Cornstarch

Obtained from corn which contains glucose which is a carbohydrate. It does not dissolve in water. Contains a bond between C, H and O. Includes covalent compounds

  • Sodium chloride
  • Sodium bicarbonate

Both are ionic compounds, soluble in water, in solid form

NaCl ⇒ Na⁺ + Cl⁻

NaHCO₃⇒ Na⁺ + HCO₃⁻

<h3>Learn more </h3>

ionic bonding

brainly.com/question/1603987

Type of atoms typically form covalent bonds

brainly.com/question/13648552

the ionic compound LiI

brainly.com/question/2732123#

Keywords : ionic, covalent, Oil ,Cornstarch ,Sodium chloride,Sodium bicarbonate

#LearnWithBrainly

6 0
4 years ago
Read 2 more answers
_Al2O3+heat=_Al+_O2​
Natalka [10]

Answer:

6.

2AI2O3 + heat ->  4AI + 3O2

Reaction type: Combustion

7.

2AI+ 6HCl -> 3H2 + 2AlCl3

Reaction type: Single Replacement

8.

IDK

Reaction type: Double Replacement?

Explanation:

8 0
3 years ago
How would you arrange the objects below from greatest to least volume?
ikadub [295]

Answer:

A balloon

A bottle of soda

A rock

A water bottle

Explanation:

4 0
4 years ago
Read 2 more answers
A. Electrons have a charge of_____
Dmitry [639]
Electrons: negative
Protons: positive
Neutrons: nuetral
5 0
3 years ago
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