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3 years ago

Which of these scenarios is most likely a chemical reaction?

Chemistry

2 answers:

Murrr4er [49]3 years ago

4 0

Answer: A

Explanation: Because a gas can turn into a liquid

Wittaler [7]3 years ago

3 0

Answer:

D. Two, colorless liquids are added together, and a colorless liquid and a green solid remain.

Explanation:

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The tendency of a moving object to continue moving in a straight line or a stationary object to remain in place is called

Mademuasel [1]

The tendency of a moving object to continue moving in a straight line or a stationary object to remain in place is called inertia.

Answer: C) or the third option.

5 0

3 years ago

Read 2 more answers

Given:

strojnjashka [21]

Answer:

≈ 708

Explanation

Here we have equation as:

4 Al + 3 O₂ → 2 Al₂O₃

As we know:

No of moles = Mass/ Molar mass

Here, Mass is 375 g and Molar mass is 27 gms, so no. of moles of Al will be:

=375 g /27 g/mol

= 13.889 mol

About mole ratio, we can see that for 4 moles of Al , 2 moles of Al2O3 are formed, so for 13.889 moles of Al, 13.889 mol ÷ 2 =6.944 moles of Al₂O₃ will be formed.

As we know:

Mass= No of moles/Molar mass

Mass of Al₂O₃ = 6.944 mol × 102 g/mol

= 708.288 g

Hope it helps!

3 0

4 years ago

What is a living thing in the body system?

alexandr402 [8]

Answer:

okay your heart

Explanation:

7 0

3 years ago

Read 2 more answers

Express 0.032 Ms in scientific notation using base units

bixtya [17]

0.032 Ms = 3.2 × 10^4 s

<em>Step 1</em>. Convert the number to scientific notation.

0.032 = 3.2 × 10^(-2)

<em>Step 2</em>. Convert the measurement to base units.

3.2 × 10^(-2) Ms × (10^6 s/1 Ms) = 3.2 × 10^4 s

6 0

3 years ago

The heat capacity of water is 1cal degree'g1 (1 calorie per degree centigrade, per gram). You are given 1 gallon of water at 25

sdas [7]

Answer:

The heat needed to boil 1 gallon of water is 81,490.62 Joules.

Explanation:

$Q=mc\Delta T$

Where:

Q = heat absorbed or heat lost

c = specific heat of substance

m = Mass of the substance

ΔT = change in temperature of the substance

We have :

Volume of water = V = 1 gal = 4546.09 mL

Density of water , d= 1 g/mL

mass of water = m = d × V = 1g/mL × 4546.09 mL = 4546.09 g

Specific heat of water = c = 1 Cal/g°C

ΔT = 100°C - 25°C = 75 °C

9 (boiling pint of water is 100°C)

Heat absorbed by the water to make it boil:

$Q= 4546.09 g\times 1 Cal/g^oC\times 75^oC=340,956.75 Cal$

1 calorie = 4.184 J

$Q=\frac{340,956.75}{4.184} J = 81,490.62 J$

The heat needed to boil 1 gallon of water is 81,490.62 Joules.

5 0

3 years ago