3 years ago

Ph of 66666666666666666666666

1 answer:

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When calcium chloride is dissolved in water, to which end of the adjacent water molecules will a calcium ion be attracted? the o

Lesechka [4]

Ca ionises into Ca^2+. Ca^2+ will be attracted to O^2- ions in the water, since opposite charges attract. (Hydrogen in water forms H^+)

6 0

4 years ago

Is the process of making a glass of lemonade a physical or chemical change?? Explain.

Darya [45]

Physical I think

Explanation:

6 0

3 years ago

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3. A sample of air in a syringe exerts a pressure of 1.02 atm at 22.0°C. The syringe is placed in a boiling-water bath at 100.0°

inysia [295]

Answer:

0.214 mL

explanation:

8 0

3 years ago

The pressure of a gas is 100.0 kPa and its volume is 500.0 mL. If the volume increases to 1,000.0 mL, what is the new pressure o

elena-14-01-66 [18.8K]

Answer:

$P_2=50kPa$

Explanation:

Hello,

In this case, we can apply the Boyle's law in order to understand the pressure-volume relationship as an inversely proportional relationship relating the initial and the final volume:

$P_1V_1=P_2V_2$

Next, we compute the final pressure P2:

$P_2=\frac{P_1V_1}{V_2}=\frac{100.00kPa*500.0mL}{1000.0mL} \\\\P_2=50kPa$

Thus we validate, the higher the volume the lower the pressure.

Best regards.

3 0

3 years ago

It took many of the metals several minutes to begin to react. Once the reaction was initiated, several of these metals continued

Levart [38]

Answer:

Activation Energy

Explanation:

The main cause of slowness to start a reaction is the value of it activation energy. When metals possess low activation energy, it takes them time to start a reaction. But once started, the reaction becomes vigorous.

Activation Energy: the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.

8 0

3 years ago