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4 years ago

13

1. Fill one container with very hot water and the other with ice water. 2. Place one end of spoon into the cup with hot water an

d hold on to the other end with your finger tips. 3. Hold the spoon for a minute or two. What do you feel happening?

1 answer:

____ [38]4 years ago

8 0

The spoon will get warmer as it takes in the heat of the water

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Explain whether changing the ratio of baking soda and vinegar changes the amount of carbon dioxide produced. Include the evidenc

PilotLPTM [1.2K]

Answer:

Reducing the amount of vinegar will reduce the amount of carbon dioxide produced because there will be fewer molecules of acetic acid to react with the baking soda and produce the carbon dioxide.

To make more carbon dioxide, you could add either more acetic acid or more sodium bicarbonate or more of both.

Explanation:

Hope it helps! ^_^

5 0

3 years ago

Solve the following equation:13x - 22 = 30

Pavlova-9 [17]

Answer:

52/13

Explanation:

13X=30+22

x=52/13

7 0

3 years ago

Four gases were combined in a gas cylinder with these partial pressures: 3. 5 atm N2, 2. 8 atm O2, 0. 25 atm Ar, and 0. 15 atm H

aksik [14]

The total pressure of the gas has been 11.9 atm.

The partial pressure has been the pressure exerted by the individual gas in the mixture.

According to the Dalton's law of Partial pressure, the pressure of the gas has been the sum of the partial pressure of each gas in the mixture.

<h3 /><h3>Computation for the pressure of gas</h3>

The given gas has partial pressure of Nitrogen, $P_{N_2}=3.5\;\rm atm$

The partial pressure of Oxygen, $P_{O_2}=8\;\rm atm$

The partial pressure of Argon, $P_{Ar}=0.25\;\rm atm$

The partial pressure of Helium, $P_{He}=0.15\;\rm atm$

The total pressure, (<em>P</em>) of the gas has been given as:

$P=P_{N_2}\;+\;P_{O_2}\;+\;P_{Ar}\;+\;P_{He}\\
P=3.5\;+8\;+\;0.25\;+\;0.15\;\text{atm}\\
P=11.9\;\rm atm$

The total pressure of the gas has been 11.9 atm.

Learn more about the vapor pressure, here:

brainly.com/question/25356241

7 0

3 years ago

Calculate the pH of substance one if it has an [OH-] that is equal to 3.2* 10^-8

damaskus [11]

Answer:

pH = 6.5

Explanation:

Given data:

pH of substance = ?

[OH⁻] concentration = 3.2×10⁻⁸

Solution:

pOH = -log[OH⁻]

pOH = -log[3.2×10⁻⁸]

pOH = 7.5

we know that,

pH + pOH = 14

pH = 14- pOH

pH = 14 - 7.5

pH = 6.5

7 0

3 years ago

According to the law of conservation of energy which is always true

Lerok [7]

The sum of all energies involved in breaking and or forming chemical bonds within the reactants side of the reaction is equal to the sum of all energies involved in the formation and rearranging of atoms within the product side of the chemical reaction.

The total energies of reactants = the total energies of products.

8 0

3 years ago