Which two come together to form an ionic bond?

a. a positive cation and a ngetaive cation
b. a positive cation and a negative anion
c. a positive cation and a positive anion
d. a positive anion and a negative anion

The mass of water produced by the reaction of the 23 g of \(SiO_2\)  is 13.8 g.

The given chemical reaction;

\(4Hf (g) \ + \ SiO_2 (s) \ --> \ SiF_4(g) \ + \ 2H_2O(l)\)

In the given compound above, we can deduce the following;

60 g of \(SiO_2\)  --------- 36 g of water

23 g of \(SiO_2\)  ------------- ? of water

\(mass \ of \ water = \frac{23 \times 36}{60} = 13.8 \ g \ of \ water\)

Thus, the mass of water produced by the reaction of the 23 g of \(SiO_2\)  is 13.8 g.

In the reaction of the given compound, \(4Hf (g) \ + \ SiO_2 (s) \ --> \ SiF_4(g) \ + \ 2H_2O(l)\), what mass of water (in grams) is produced by the reaction of 23.0 g of SiO2?

Learn more here:https://brainly.com/question/13644576

Answer:

a) an opposing force act on it

i hope its true

C: 2.33 °C the freezing point of 0.125 kg of H2O with 13.64 g of C2H5OH with a kf of 1.86 °C/m.

Freezing-point When a lesser quantity of another, non-volatile substance is introduced, the lowest temperature at which a substance freezes drops. Adding salt to water (used in ice cream makers and to de-ice roads), alcohol in water, ethylene or propylene glycol in water (used in car antifreeze), adding copper to molten silver (used to make solder that flows at a lower temperature than the silver pieces being joined), or mixing two solids such as impurities into a finely powdered drug are some examples.

In all instances, the substance added/present in smaller quantities is referred to as the solute, while the initial substance present in greater quantities is referred to as the solvent.

Learn more about freezing point

https://brainly.com/question/3121416

#SPJ1

Answer:

I believe it is a physical change

Explanation:

The telltale sign of a chemical change is the formation of a new substance. They also usually involve the production of energy (heat, light, sound etc.)

To graph the function g(x) = f(-x), you can start with the graph of f(x) and then reflect it about the y-axis.

To find the graph of the function g(x) = f(-x), we can start with the graph of the function f(x) and then reflect it about the y-axis.

If the graph of f(x) is symmetric with respect to the y-axis, meaning it is unchanged when reflected, then g(x) = f(-x) will have the same graph as f(x).

However, if the graph of f(x) is not symmetric with respect to the y-axis, then g(x) = f(-x) will be a reflection of f(x) about the y-axis.

In either case, the resulting graph of g(x) = f(-x) will be symmetric with respect to the y-axis.

Learn more about the graph of functions at: https://brainly.com/question/17089414

#SPJ1

Answer:

No, no precipitate is formed.

Explanation:

Hello there!

In this case, since the reaction between silver nitrate and sodium acetate is:

\(AgNO_3(aq)+NaC_2H_3O_2(aq)\rightarrow AgC_2H_3O_2(s)+NaNO_3(aq)\)

In such a way, we can calculate the concentration of silver and acetate ions in the solution as shown below, and considering that the final total volume is 50.00 mL or 0.0500 L:

\([Ag^+]=\frac{20.00mL*0.077M}{50.00mL}=0.0308M\)

\([C_2H_3O_2^-]=\frac{30.00mL*0.043M}{50.00mL}=0.0258M\)

In such a way, we can calculate the precipitation quotient by:

\(Q=[Ag^+][C_2H_3O_2^-]=0.0308*0.0258=7.95x10^{-4}\)

Which is smaller than Ksp and meaning that the precipitation does not occur.

Regards!

A.) The solubility of nitrogen at a pressure of 2.00 atm is \(1.36 \times 10^{(-3)} M.\)

B.) The solubility of nitrogen at a pressure of 688 mmHg is \(6.17 \times 10^{(-4)} M.\)

To calculate the solubility of nitrogen (N2) in M (molarity) at different pressures, we need to use Henry's Law, which states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. The equation for Henry's Law is:

C = k * P

Where:

C is the solubility of the gas in M (molarity)

k is the Henry's Law constant

P is the partial pressure of the gas

For nitrogen, the Henry's Law constant (k) is approximately 6.8 x 10^(-4) M/atm.

a) To calculate the solubility of nitrogen at a pressure of 2.00 atm:

C = (6.8 x 10^(-4) M/atm) * (2.00 atm)

C = 1.36 x 10^(-3) M

Therefore, the solubility of nitrogen at a pressure of 2.00 atm is 1.36 x 10^(-3) M.

b) To calculate the solubility of nitrogen at a pressure of 688 mmHg:

First, we need to convert mmHg to atm by dividing by 760 (since 1 atm = 760 mmHg).

P = 688 mmHg / 760 mmHg/atm

P = 0.905 atm

C = (6.8 x 10^(-4) M/atm) * (0.905 atm)

C = 6.17 x 10^(-4) M

Therefore, the solubility of nitrogen at a pressure of 688 mmHg is 6.17 x 10^(-4) M.

It's important to note that the solubility of a gas can also depend on temperature, so these calculations assume a constant temperature. Additionally, Henry's Law is an approximation and may not hold true for all gas-liquid systems, especially at high pressures or when there are significant intermolecular interactions between the gas and liquid.

For more question on pressure visit:

https://brainly.com/question/24719118

#SPJ8

The statement(s) that correctly compare the masses of protons, neutrons, and electrons are options A and F.

Subatomic particles are any of many units of matter smaller than an atom. They are three in number and are as follows;

Protons are positively charged subatomic particles forming part of the nucleus of an atom. Electrons are negatively charged particles while neutrons are neutrally charged i.e. 0.

Based on the above explanation, it can be said that:

Learn more about subatomic particles at: https://brainly.com/question/1527888

#SPJ1

Answer:

Copper(I) chloride, commonly called cuprous chloride, is the lower chloride of copper, with the formula CuCl. The substance is a white solid sparingly soluble in water, but very soluble in concentrated hydrochloric acid. Impure samples appear green due to the presence of copper(II) chloride.

Explanation:

Please mark me brainliest

Answer:

20.44 grams of sodium nitrate can be formed

Explanation:

The balanced chemical equation for the reaction between lead (II) nitrate and sodium iodide is:

Pb(NO3)2 + 2NaI → 2NaNO3 + PbI2

Answer:

a) polytetrafluorethylene

b) polyethylene terepthalate

c) Nickel

d) Polytetrafluroethylene

e) Aluminum

Explanation:

a) polytetrafluorethylene can be used to make laboratory bottles that can contain nitric acids ( dilute ones ) because of its resistance to either acidic or basic solution

b) polyethylene terepthalate can be used because it is relatively cheaper, also Benzene doesn't exhibit corrosion effect

c) Nickel can be used to produce pipes that transport hot alkaline solutions

d) Polytetrafluroethylene can be used for underground water tanks

e) Aluminum is used because it is light weighted and exhibits corrosion resistivity to climate change

Answer:

3 pieces of lunch-meat and 2 slices of cheese

Explanation:

You have enough bread to make 3 sandwiches

You have enough lunch-meat to make 4 sandwiches

You have enough cheese to make 5 sandwiches

In all you have enough material to make 3 sandwiches

so if you subtract three from each number above you will have no bread, enough lunch-meat to make one sandwich and enough cheese to make two sandwiches

luch-meat for one sandwich is: 3 pieces

Cheese for two sandwiches is:  2 pieces

Answer: The gas generated by two antacid tablets has a smaller volume.

Explanation:

Since the antiacid is the limiting reagent, we know that the more tablets there are, the more gas there will be.

This means that there will be more gas generated by the four antiacid tablets when compared to the two antiacid tablets, which gives us that the gas generated by the two antiacid tablets has a smaller volume.

Answer:

volume

Explanation:

Answer:

The next one's are B and 0.245

Explanation:

Answer:

Melting and evaporation both represent changes in matter that involve behavior at the molecular level.

Answer:

well both disappear over time

Explanation:

By using the ideal gas law and Avogadro's number, we find that there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

To determine the number of molecules of CO2 in 2.5 L at STP (Standard Temperature and Pressure), we can use the ideal gas law and Avogadro's number.

Avogadro's number (N_A) is a fundamental constant representing the number of particles (atoms, molecules, ions) in one mole of substance. Its value is approximately 6.022 × 10^23 particles/mol.

STP conditions are defined as a temperature of 273.15 K (0 °C) and a pressure of 1 atmosphere (1 atm).

First, we need to convert the volume from liters to moles of CO2. To do this, we use the ideal gas law equation:

PV = nRT,

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Since we have STP conditions, we can substitute the values:

(1 atm) × (2.5 L) = n × (0.0821 L·atm/(mol·K)) × (273.15 K).

Simplifying the equation:

2.5 = n × 22.4149.

Solving for n (the number of moles):

n = 2.5 / 22.4149 ≈ 0.1116 moles.

Next, we can calculate the number of molecules using Avogadro's number:

Number of molecules = n × N_A.

Number of molecules = 0.1116 moles × (6.022 × 10^23 particles/mol).

Number of molecules ≈ 6.72 × 10^22 molecules.

Therefore, there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

For more such questions on ideal gas law visit:

https://brainly.com/question/27870704

#SPJ8

Explanation:

To calculate the heat gained by nickel, we can use the formula:

q = m * c * ΔT

where q is the heat gained, m is the mass of the nickel, c is the specific heat of nickel, and ΔT is the change in temperature.

Given:

- Mass of nickel, m = 31.4 g

- Specific heat of nickel, c = 0.443 J/g · °C

- Change in temperature, ΔT = 64.2 °C - 27.2 °C = 37.0 °C

Substituting the values into the formula, we get:

q = (31.4 g) * (0.443 J/g · °C) * (37.0 °C)

Simplifying the calculation, we get:

q = 584 J

Therefore, the heat gained by nickel when 31.4 g of nickel is warmed from 27.2 °C to 64.2 °C is 584 J.

Answer:

\(M_2=0.51M\)

Explanation:

Hello,

In this case, for this dilution process, we understand that the moles of the solute (potassium nitrate) remain unchanged upon the addition of diluting water. However, the resulting or final volume includes the added water as shown below:

\(V_2=300mL+50mL=350mL\)

In such a way, we are able to relate the solution before and after the dilution by:

\(V_1M_1=V_2M_2\)

Hence, we solve for the final molarity as:

\(M_2=\frac{M_1V_1}{V_2}=\frac{0.6M*300mL}{350mL}\)

Best regards.

\(M_2=0.51M\)

Amobarbital (like all barbiturates) works by being incontestible to the GABAA receptor at either the alpha or the beta subunit.

Amobarbital (like all barbiturates) works by binding to the GABAA receptor at either the alpha or the beta subunit. These are compulsory sites that are distinct from GABA itself and also distinct from the benzodiazepine binding site.

Amobarbital is a barbiturate classified as having a halfway duration of action, meaning that the effects of the drug can last from 4-6 amobarbital increases the effects of benazepril by apparatus: pharmacodynamic synergism.

So we can conclude that Amobarbital, 5-ethyl-5-isoamyl barbituric acid like all barbiturates.

Learn more about Amobarbital here: https://brainly.com/question/7237163

#SPJ1

Density of 10.002g of water at 20°C in g/mL = 0.998 g/mL

Given that:

density of water at 20°C = 0.9982 g/mL

 Density = mass / volume ---- ( 1 )

Where :  mass = 10.002 g

               Volume = ?

               Density = 0.9982 g/mL

∴ Volume = 10.002 / 0.9982   = 10.02 mL

back to equation ( 1 )

Density = 10.002 / 10.02 = 0.9982 g/mL ≈ 0.998 g/mL

Therefore the density of 10.002 g of water at 20°C in the units of g/mL is 0.998 g/mL

Learn more : https://brainly.com/question/10111575

Container 3 has the gas stored at the highest temperature.

Temperature is a measure of the average kinetic energy of the particles in a substance. In the given table, it is stated that container 3 has a large number of collisions with container walls, high average kinetic energy, and large number of particles with large spaces between them.

These properties indicate that the gas in container 3 has higher kinetic energy and more vigorous movement compared to the other containers.

Container 1 has a low number of collisions with container walls and a medium average kinetic energy. This suggests that the gas in container 1 has lower energy and less movement than the gas in container 3.

Container 2 has a large number of collisions with container walls, but it also has a small number of particles with little spaces between them. While the collisions may be frequent, the limited number of particles and the lack of space between them may result in lower overall kinetic energy compared to container 3.

Container 4 has few collisions with container walls, low average kinetic energy, and a small number of particles. These properties indicate that the gas in container 4 has the lowest energy and least movement among all the containers.

Container 3

For more such questions on temperature visit;

https://brainly.com/question/4735135

#SPJ8

Answer:

5.59L

Explanation:

If each mole of gas is 55 L, then this relationship can be used as a conversion factor to find the volume of gas produced

The number of moles for the quanity 8.06 x\(10_{21\) atoms of Pt​ is approximately 2.61 grams.

To calculate the number of moles for a given quantity of atoms, we can use Avogadro's number and the molar mass of the element. Avogadro's number is 6.022 x 10²³ atoms/mol.

In this case, you have 8.06 x 10²¹ atoms of Pt. To find the number of moles, divide this quantity by Avogadro's number:

8.06 x 10²¹  atoms Pt / 6.022 x 10²³  atoms/mol = 0.0134 mol Pt

So, there are approximately 0.0134 moles of Pt in 8.06 x 10²¹  atoms of Pt.

The molar mass of Pt (platinum) is 195.08 g/mol. To convert the number of moles to grams, multiply the number of moles by the molar mass:

0.0134 mol Pt x 195.08 g/mol = 2.61 g Pt

Therefore, there are approximately 2.61 grams of Pt in 8.06 x10²¹  atoms of Pt.

In summary, the number of moles for the quantity 8.06 x 10²¹ atoms of Pt is approximately 0.0134 moles. This is equivalent to approximately 2.61 grams of Pt. Remember to use Avogadro's number and the molar mass to perform these calculations accurately.

Know more about  moles   here:

https://brainly.com/question/29367909

#SPJ8

Answer:

The answer to your question is given below.

Explanation:

Sodium (Na) is a group 1 element because it has 1 electron in it's outermost shell.

Sodium ion (Na+) is formed when sodium atom (Na) lose it's outermost electron to attain the octet configuration of the noble gas element.

This can further be seen from the equation given below:

Na —> Na+ + e

Thus, we can represent the above in electronic configuration form as follow:

Na (11) => 1s² 2s²2p⁶ 3s¹

Na+ (10) => 1s² 2s²2p⁶

Answer:

Explanation:

i) in keeping industrial machine cool

ii) in textile inustries for dying clothes

Both the iron fillings and the sulfur reacted completely and none was in excess.

The excess reagents is calculated as follows;

The balanced chemical equation for the reaction between iron (Fe) and sulfur (S) is given as;

Fe + S  ----> FeS

The number of moles for each reactant is calculated as follows;

Moles of iron (Fe) = Mass of iron / Molar mass of iron

= 55.0 g / 55.85 g/mol

= 0.985 mol

≈ 1 mol

Moles of sulfur (S) = Mass of sulfur / Molar mass of sulfur

= 23.8 g / 32.06 g/mol

= 0.742 mol

≈ 1 mole

Both moles are equal so none is excess.

Learn more about excess reagents here: https://brainly.com/question/29109077

#SPJ1