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2 years ago

6

Jeffry was wondering why when he made breakfast, that after he was done cooking, the mass of everything he used was not the same

. What best describes why this is so, according to the law of conservation of mass.

1 answer:

12345 [234]2 years ago

4 0

Answer:

equivalent exchange forces cancel out but the substances are affected around the area

Explanation:

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5. Forces (or actions) always come in pairs. They<br> are____and_____

azamat

Answer:

equal and opposite

Explanation:

The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object

3 0

2 years ago

Which scientist discovered that the atomic number, rather than the atomic weight, is more responsible for the properties of an e

myrzilka [38]

<em>Answer:</em>

The correct option is Moseley who has discovered the atomic number.

<em>Explanation:</em>

In 1913, H. Moseley discovered a new properties of an element atomic number. He observed that elements in the periodic table can be arranged better according to atomic number rather than atomic mass.
The atomic number of any elements is always equal to numbers of electrons in it.

3 0

2 years ago

Which of these represents a compound ? *<br> Water<br> Hydrogen<br> Oxygen

fiasKO [112]

Answer:

water

Explanation:

H2O

8 0

2 years ago

Read 2 more answers

For the Bradford assay, the instructor will make a Bradford reagent dye by mixing 50 ml of 95% v/v ethanol with 100 mg of Coomas

Flauer [41]

Answer:

4.25% is the final concentration of phosphoric acid.

Explanation:

Initial concentration of phosphoric acid = $C_1=85\%=0.85$

Initial volume of phosphoric acid = $V_1=50 mL$

Final concentration of phosphoric acid = $C_2=?$

Final volume of phosphoric acid = $V_2=1 L=1000 mL$

( 1L = 1000 mL)

$C_1V_1=C_2V_2$

$C_2=\frac{C_1times V_1}{V_2}$

$=\frac{0.85\times 50 mL}{1000 mL}=0.0425=4.25%$

4.25% is the final concentration of phosphoric acid.

4 0

2 years ago

How many molecules are in 4CO2

Novay_Z [31]

4CO2 is 4 molecules of CO2. CO2 consists of one carbon atom and two oxygen atoms.

4 0

2 years ago