5.(08.02 MC)
A 0.680 M Ca(OH)2 solution was prepared by dissolving 55.0 grams of Ca(OH)2 in enough water. What is the total volume of the solution formed? (4 points)
O 1.09 liters
0 1.23 liters
2.01 liters
O 2.18 liters

Answer:

.5 M

Explanation:

molarity = moles / liters

2.5/5 = .5 M

Answer:

OK i see

Explanation:

Answer:

It is greater than -600kJ/mol and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.

Explanation:

In an endothermic reaction, the reaction requires a determined amount of energy to occurs.

The reaction of the problem has H = -600kJ/mol. The reaction is endothermic and the energy that the reaction needs is absorbed by the reactants. That means, the energy of products:

Is greater than -600kJ/mol and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.

Answer:

It is greater than -600kJ/mol and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.

Explanation:

Answer:

Gallium

Iodine

Chlorine

Answer:

atoms contain negatively charged particles

the electron has a specific mass

Explanation:

got this shyt wrong for yall folks

Answer:

1 and 3

Explanation:

just had this question

Answer:

b

Explanation:

b

The answer Is Alpha particle

Explanation:

:D

Answer:

NO2 is the molecular formula  of nitrogen Oxide​

Explanation:

Correct question

An oxide of nitrogen contain its own volume of nitrogen

its vapour dentity is 23. Find the molecular formula

Of nitrogen Oxide

Solution

As we know

Molecular Weight  is equal to two times the  vapour density

Hence, the molecular weight of Oxide of nitrogen is 2 * 22 = 44

Molecular weight of Oxide of nitrogen  is the sum of atomic weight of nitrogen and oxygen

Molecular weight of Oxide of nitrogen = 14 + 16 *Y

14 + 16 *Y  = 46

Y = 2

Hence, the formula is NO2

0.92 × 1/46 × 2/1 × 12/1 =

0.02 × 2 × 12 =

0.04 × 12 =

0.48 gr carbon

The mass of carbon in one mole of ethanol (46.03 g) is 12.0 g. Thus, mass of carbon in 0.92 g of ethanol is 0.48 g.

Ethanol is an alcohol with the formula C2H5OH. This organic compound having a molecular weight of 46.03 g/mol.

Atomic mass of carbon = 12.01 g/mol

                         oxygen = 16 g/mol

                    hydrogen  = 1.01 g/mol

Thus total mass of one mole of ethanol = (12.01×2) +(16) +(6×1.01) = 46.03 g/mol

46.03 g of ethanol contains 2402 g of carbon. Thus mass of carbon in 0.92 g of ethanol is calculated as follows;

(24.02 × 0.92) / 46.03 = 0.48 g

Hence, the mass of carbon in 0.92 g of ethanol is 0.48 g.

To  learn more about ethanol, refer the link below:

https://brainly.com/question/7382206

#SPJ2

Answer:

BUTANE

Explanation:

H3C--CH2--CH2--CH3

HERE, 4 CARBON AND SINGLE BOND SO, BUTANE

Answer:

D.BUTANE

Explanation:

THIS IS MY ANSWER OK

Answer:

What I think it is it's.. 3?

Answer:

[tex]\boxed {\boxed {\sf 19 \ M}}[/tex]

Explanation:

Molarity is a measure of concentration in moles per liter, so the formula is:

[tex]molarity= \frac{moles \ of \ solute}{liters \ of \ solution}}[/tex]

This solution has 9.0 moles of solute and 462 milliliters of solution. We must convert milliliters to liters. Remember that 1 liter contains 1000 milliliters.

Create a ratio.

Multiply by the value we are converting: 462 milliliters

[tex]0.462 \ L[/tex]

Now we know both values and we can solve for the molarity.

[tex]molarity= \frac{9.0 \ mol}{ 0.462 \ L}[/tex]

Divide.

[tex]molarity= 19.4805195 \ mol/L[/tex]

The original measurements of moles and milliliters have 2 and 3 significant figures respectively. We have to round our answer to the least number of sig figs, which is 2 in this case.

For the number we found, that is the ones place. The 4 in the tenths place (19.4805195) tells us to leave the 9 in the ones place.

[tex]molarity= 19 \ mol/L[/tex]

1 mole per liter is equal to 1 molar or M, so our answer is equal to 19 M.

[tex]molarity \approx 19 \ M[/tex]

The molarity of the solution is approximately 19 M.

Answer:

0.072 moles, 16.776g.

Explanation:

The reaction of Na2SO4 and BaCl2 occurs as follows:

Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq)

To solve this question we must find the moles of each reactant. As the reaction is 1:1, the reactant with the low number of moles is limiting reactant. The moles of limiting reactant = Moles BaSO4. The mass can be obtained with the molar mass of BaSO4 -233.38g/mol-

Moles Na2SO4:

500cm³ = 0.500L * (0.250mol / L) = 0.125 moles

Moles BaCl2 -Molar mass: 208.23g/mol-

15.00g * (1mol / 208.23g) = 0.072 moles

The moles of BaSO4 are 0.072 moles and its mass is:

0.072 moles * (233.38g / mol) = 16.8g ≈ 16.776g

Answer: The 3rd one

Explanation: Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

I might be wrong

Answer:

petroleum,natural gas,lime stone, coal,water,acetylene etc.

Answer:

petroleum,natural gas,lime stone,coal

water,acetylene

Answer:

Explanation:

Hope it helps

#CarryOnLearning

Answer:

-2, -1, 0, 1, 2

Explanation:

There are four types of quantum numbers;

1) Principal quantum number (n)

2) Azimuthal quantum number (l)

3) magnetic quantum number (ml)

4) Spin quantum number (s)

The azimuthal quantum number (l) describes the orbital angular momentum and shape of an orbital while the magnetic quantum number shows the projections of the orbital angular momentum along a specified axis.  This implies that the magnetic quantum number shows the orientation of various orbitals along the Cartesian axes. The values of the magnetic quantum  number ranges from -l to + l

For l= 2, the possible values of the magnetic quantum number are; -2, -1, 0, 1, 2

Answer:

127 g of Ag are made in the reaction.

Explanation:

Reaction is:  2 AgNO₃ + Cu → Cu(NO₃)₂ + 2 Ag

If we only have data from nitrate, we assume the Cu is in excess.

We determine the moles of silver nitrate:

Mass / Molar mass → 200 g / 169.87 g/mol = 1.18 moles

Ratio is 2:2. If 2 moles of silver nitrate produce 2 moles of Ag, then

1.18 moles of salt, will produce 1.18 moles of silver

We convert mass to moles:

1.18 mol . 107.87 g/mol = 127 g

Answer:

true

Explanation:

Answer:

you can test carbon dioxide gas with calcium hydroxide

hope this is what you're looking for

stay safe and have a nice day

✌◕ ◡ ◕✌

Answer:

So none of the option is correct.

Explanation:

The energy is the capacity of to work.

It is a scalar quantity.

According to the law of conservation of energy, the energy can neither be created and nor be destroyed, it can transform from one form to another.

For example, in case of a light bulb, the electric energy is converted into the light and heat energy.

When a battery operated robot with glowing eyes moving on the floor, the chemical energy of the battery is converted into the light energy and the kinetic energy so the law of conservation of energy holds good.

Answer:

Explanation:

The pH of a solution can be found by using the formula

[tex]pH = - log [ {H}^{+} ][/tex]

From the question we have

[tex]ph = - log(9.34 \times {10}^{ - 6} ) \\ = 5.0296...[/tex]

We have the final answer as

Hope this helps you

2 FeO + 1 C ===》2 Fe + 1 CO2

Explanation:

Fe2O2+C-----> 2Fe+CO2

balanced equation..

hope it helps.

Answer:

If it is unsaturated, we can dissolve some more amounts of potassium nitrate into it Explanation:

Answer:

That means, under 10.0kPa of pressure, 0.4g of gas can be dissolved in 1L

Explanation:

Based on Henry's law, the solubility of the gas is directly proportional to the pressure. The equation is:

P1S2 = P2S1

Where P is pressure and S solubility of 1, initial state and 2, final state of the gas.

Replacing:

P1 = 50.0kPa

S1 = 2.0g/L

P2 = 10.0kPa

S2 = ??

50.0kPa*S2 = 10.0kPa*2.0g/L

S2 = 0.4g/L

That means, under 10.0kPa of pressure, 0.4g of gas can be dissolved in 1L

Answer: 0.4 g/L

Explanation:

S2 = S1 x P2 / P1

S2= 2 g/L x 10 kPa / 50 kPa

CROSS OUT

S2= 2g/L x 10 / 50

S2= 20 g/L/50

S2= .4 g/L

Answer:

mixture of four compounds

mixture of two elements and two compounds

Explanation: