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sukhopar [10]
3 years ago
8

An object with a negative acceleration could NEVER have a positive velocity. a. TRUE b. FALSE

Chemistry
1 answer:
VARVARA [1.3K]3 years ago
3 0

Answer:false

Explanation:

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Mixing sand and salt is it a chemical or physical change​
defon

Answer:

Mixing of salt is physical change.

Explanation:

Mixing of salt is physical change because no chemical reaction occur between them. Sand is non polar while salt is polar.

Physical Change:                                                                                              

The changes that occur only due to change in shape or form but their chemical or internal composition remain unchanged.

These changes were reversible.

They have same chemical property.

These changes can be observed with naked eye.

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible

These changes occur due to chemical reactions

These may not be observed with naked eye

7 0
3 years ago
Explain which has a greater impact on the kinetic energy of an object - the
AlladinOne [14]

Answer:

it is the objects mass, I learned this last semester

6 0
3 years ago
Read 2 more answers
What is the molarity of a solution that contains 87.75g of NaCI in 500.ml of solution
Brut [27]

Answer:

M = 3.0 mol/L.

Explanation:

  • We can calculate the molarity of a solution using the relation:

<em>M = (mass x 1000) / (molar mass x V)</em>

  • M is the molarity "number of moles of solute per 1.0 L of the solution.
  • mass is the mass of the solute (g) (m = 87.75 g of NaCl).
  • molar mass of NaCl = 58.44 g/mol.
  • V is the volume of the solution (ml) (V = 500.0 ml).

∴ M = (mass x 1000) / (molar mass x V) = (87.75 g x 1000) / (58.44 g/mol x 500.0 ml) = 3.0 mol/L.

6 0
3 years ago
How many significant figures<br> are in this number?<br> 0.00708900
Norma-Jean [14]
Don’t know sorry 1.627
4 0
3 years ago
Read 2 more answers
S--&gt;SO2--&gt;SO3--&gt;H2SO4--&gt;SO2--&gt;H2SO3--&gt;Na2SO3--&gt;SO2--&gt; Na2SO3--&gt;Na2SO4--&gt;BaSO4
siniylev [52]
That is not a question/problem and makes no sense whatsoever
4 0
3 years ago
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