Write the net ionic equation for the following reaction:

AgC2H3O2(aq) + CaCl2(aq) →

Answers

Answer 1

Answer:

Answer:

2Ag^+(aq) + 2Cl^-(aq) --------> 2AgCl(s)

Explanation:

The net ionic equation reflects the main reaction that occurred in the system. It tells you the most important reaction that took place.

If we first put down the balanced molecular equation for the reaction, we have;

CaCl2(aq) + 2 AgC2H3O2(aq) ---------> 2 AgCl(s) + Ca(C2H3O2)2 (aq)

The net ionic equation is;

2Ag^+(aq) + 2Cl^-(aq) --------> 2AgCl(s)

0.004 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = (N)/(L) \n$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{2.4 * {10}^(21) }{6.02 * {10}^(23) } \n = 0.003986$

We have the final answer as

0.004 moles

Hope this helps you

How much does 1.2 moles of koh weight

Answers

0.02138822407164 moles. There are about 56 grams KOH in one mole.

Workers digging a tunnel through a city find someancient pots decorated with geometric designs.
Which of the following tasks might they ask a
chemist to do? Explain your answer.
a. Determine the materials used to make the pots.
b. Explain what the designs on the pots represent.
c. Recommend how to store the pots to prevent
further damage.

Answers

Answer:

a. Determine the materials used to make the pots.

Explanation:

Workers digging a tunnel through a city who find some ancient pots decorated with geometric designs will employ the services of a chemist.

The chemist would help to determine the materials which were used to make the pots . This is usually done by various type of experiments and observations. After the constituent of the pot is gotten then more information would be derived from the possible source and use of the pot

The oxygen saturation of a lake is found by dividing the amount of dissolved oxygen the lake water currently hasper liter by the dissolved oxygen capacity per liter of the water, and then converting that number into a percent. If the lake currently has 7.4 milligrams of dissolved oxygen per liter of water and the dissolved oxygen capacityis 9.4 milligrams per liter, what is the oxygen saturation level of the lake, to the nearest percent? Please help me with this one ;(

Answers

$(7.4)/(9.4)*100\%= (7.4*100)/(9.4)\%= (740)/(9.4)\%\approx78.72\%\approx79\%$

Final answer:

To find the oxygen saturation level of the lake, divide the amount of dissolved oxygen in the lake's water per liter (7.4 mg/L) by the water's dissolved oxygen capacity per liter (9.4 mg/L) to get the proportion. Multiply this by 100 to convert it into a percentage (78.72%), which rounds to 79% saturation.

Explanation:

To calculate the oxygen saturation of the lake, we divide the amount of dissolved oxygen the lake water currently has per liter by the dissolved oxygen capacity per liter of the water, and then we convert that number to a percentage.

Here are the steps to solve this problem:

First, divide the amount of dissolved oxygen the water currently has (7.4 milligrams per liter) by the dissolved oxygen capacity (9.4 milligrams per liter). This will give you the proportion of oxygen in the water. This step is a simple division: 7.4 ÷ 9.4 = 0.7872 (rounded to the nearest four decimal places).
Next, multiply the result by 100 to convert the proportion into a percentage. This step is 0.7872 x 100 = 78.72% (rounded to the nearest hundredth).
However, your question asks to round to the nearest percent, so the final answer would be 79% when rounded to the nearest percent. Thus, the oxygen saturation level of the lake is 79%.
Note that this oxygen saturation is important to many aquatic organisms that need oxygen from the water to survive.