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Svetlanka [38]
3 years ago
7

What is the chemical characteristics of the compound barium oxide?

Chemistry
1 answer:
Nookie1986 [14]3 years ago
4 0
Barium oxide is a white, hygroscopic non-flammable compound. It also takes on the form of a cubic structure and is used in cathode ray tubes, crown glass, and catalysts.

It's known to be very harmful to human skin and if swallowed in large quantities it causes irritation. Excessive quantities of barium oxide can and most likely will lead to death.
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10mL volume of 75mM EtOH is necessary for an experiment. What volumes of 1M EtOH and water should be mixed to obtain the working
kenny6666 [7]

Answer: Volume of the 1M EtOH and water should be 0.75 ml and 9.25 ml respectively to obtain the working concentration.

Explanation:

According to the dilution law,

C_1V_1=C_2V_2

where,

C_1 = molarity of stock solution = 1M

V_1 = volume of stock solution = ?

C_2 = molarity of diluted solution = 0.075 M    (1mM=0.001M)

V_2 = volume of diluted solution = 10 ml

Putting in the values we get:

1M\times V_1=0.075M\times 10ml

V_1=0.75ml

Thus 0.75 ml of 1M EtOH is taken and (10-0.75)ml = 9.25 ml of water is added to make the volume 10ml.

Therefore, volume of the 1M EtOH and water should be 0.75 ml and 9.25 ml respectively to obtain the working concentration

3 0
3 years ago
Which of the following is a chemical property?
TEA [102]
The answer to this question is A
6 0
3 years ago
Read 2 more answers
1.) Activation energy is _____.
balandron [24]
To answer the questions,

(1) Activation energy is the amount of energy that is needed for the reaction to proceed, converting the reactant to products. The answer is letter B.

(2) The rate of chemical reaction normally increases as the reactant concentration is increased. The answer is letter C. 

6 0
3 years ago
Read 2 more answers
_______ properties depend on the concentration of a solute in a solution but not on the identity of the solute.
Grace [21]

This problem is providing us with a statement in which we need to figure out the word fitting in the blank. At the end, after analyzing the information, the word turns out to be colligative as show below:

<h3>Colligative properties.</h3>

In chemistry, colligative properties of solutions account for the behavior of a solution with respect to the pure solvent, to which a solute is added.

Among them, we have boiling point elevation, freezing point depression, vapor pressure lowering and osmotic pressure, which are all affected by the concentration of the solute but not by the identity of the solute.

In such a way, we conclude that the correct word that fits in the blank is colligative as shown below:

"Colligative properties depend on the concentration of a solute in a solution but not on the identity of the solute."

Learn more about colligative properties: brainly.com/question/10323760

5 0
2 years ago
If you are traveling at 60mi/hr, how many meters per second is that equivalent to?
lesya [120]

Answer:

26.8224 Meters per Second.      

5 0
2 years ago
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