what has a properties of metals and nonmetals, 5 valence electrons, atomic number higher Sn.

The mass percent of Cl in SiCl2I2 is 20.13%.

The chemical formula of SiCl2I2 can be broken down into its constituent elements, Si, Cl, and I. The total mass of the compound is the sum of the masses of these elements. Then, we can find the mass percentage of chlorine in SiCl2I2.
The mass of Si is 28.09 g/mol, the mass of Cl is 35.45 g/mol, and the mass of I is 126.9 g/mol. Therefore, the molar mass of SiCl2I2 is:
Molar mass of SiCl2I2 = (28.09 g/mol) + 2(35.45 g/mol) + 2(126.9 g/mol)
= 352.79 g/mol
To find the mass percentage of chlorine in SiCl2I2, we need to determine the mass of chlorine in the compound. There are two chlorine atoms in the molecule, so the mass of chlorine is:
Mass of Cl = 2(35.45 g/mol) = 70.9 g/mol
Now, we can calculate the mass percentage of Cl in SiCl2I2:
Mass percentage of Cl = (Mass of Cl / Molar mass of SiCl2I2) × 100%
= (70.9 g/mol / 352.79 g/mol) × 100%
= 20.13%
for more questions on mass

https://brainly.com/question/24191825

#SPJ8

Explanation:

try 96 if that's not right let me know and I'll try to fix it

Answer:24

Explanation:

Answer:

The United States leads the world with over 260 billion short tons of recoverable coal reserves—28% of total global reserves and 50% more than Russia, which possesses the world's second largest reserves. so the answer would be 28%

Explanation:

Answer: The Correct answer is B, 20

Explanation:

I took the test and I got it right

The molarity of 245.0 g of H₂SO4 dissolved in 1.00 L of solution is 2.498M. the molarity of 5.00 g of NaOH in 750.0 mL of solution is 0.167M.

A chemical species' concentration in a solution, specifically the amount of a solute per unit volume of solution, is measured by its molar concentration.

The number of moles per liter when denoted by the unit symbol mol/L or mol/dm3 in SI units, is the mostly used unit used for denoting molarity in chemistry. The secret to determining molarity is to keep in mind that it is measured in moles per liter (M).

MV = grams / molar mass

(x)*(1.000 L) = (245.0 g) / (98.0768 g mol¯1)

x = 2.49804235 M

So, calculating it to 4 significant figures, x = 2.498 M

For 2nd question

Applying the same formula, MV = grams / molar mass

(x) (0.7500 L) = 5.00 g / 39.9969 g mol¯1

(x) (0.7500 L) = 0.1250097 mol

x = 0.1666796 M

x = 0.167 M (when calculated to three Significant figures)

For 3rd question,

using variation of the same formula,

0.200 M = x / 0.1000 L

x = 0.0200 mol

For the 4th question,

MV = moles of solute

no of moles x = (0.415 mol L¯1) (0.01600 L)

To know more about Molarity, visit:

https://brainly.com/question/19517011

#SPJ13

Answer:it's a

Explanation:

if you are adapting to an environment you must make change for the greater good. it's a

Answer:

its D

Explanation:

i got it on my quiz

Answer:

C

Explanation:

A displacement reaction occurs when a more reactive element replaces a less reactive element in a compound.

The general reaction can be represented as:

A + BC → AC + B

Therefore, the reactant that is more reactive than the element in the compound will undergo a displacement reaction.Out of the given options, the reactant that will not undergo a displacement reaction is C. Fluorine + sodium chloride. This is because fluorine is the most electronegative element and it cannot be displaced by any other element. In other words, fluorine is the most reactive element and there is no other element that is more reactive than it. Therefore, the reaction between fluorine and sodium chloride will not undergo a displacement reaction.

Option A, Magnesium + sodium fluoride, will undergo a displacement reaction because magnesium is more reactive than sodium, and can displace sodium from sodium fluoride.

Option B, Chlorine + sodium chloride, will undergo a displacement reaction because chlorine is more reactive than sodium, and can displace sodium from sodium chloride.

Option D, Zinc + copper (ll) chloride, will undergo a displacement reaction because zinc is more reactive than copper, and can displace copper from copper (ll) chloride.

Thus, the correct answer is C. Fluorine + sodium chloride.

I apologize of I'm wrong but its probably OA

Sorry once again!

~wise rat

Answer: C.

Explanation:

gasoline evaporating into the air

Approximately 2.829 kilojoules (kJ) of energy is required to heat 0.24 kg of lutetium from 296.2 K to 373.5 K, assuming a specific heat of 0.154 J/g-K for lutetium.

What is Energy?

Energy is a fundamental concept in physics and refers to the ability of a system to do work. It is a scalar quantity and has various forms, such as kinetic energy, potential energy, thermal energy, electromagnetic energy, and nuclear energy.

To calculate the energy required to heat 0.24 kg of lutetium from 296.2 K to 373.5 K, we can use the formula:

Q = m * c * ΔT

where Q is the energy required, m is the mass of the lutetium, c is the specific heat of lutetium, and ΔT is the change in temperature.

First, we need to convert the mass of lutetium from kg to g:

m = 0.24 kg * 1000 g/kg = 240 g

Next, we can calculate the change in temperature:

ΔT = 373.5 K - 296.2 K = 77.3 K

Finally, we can use the formula to calculate the energy required:

Q = 240 g * 0.154 J/g-K * 77.3 K

Q = 2828.992 J or 2.829 kJ (to 3 significant figures)

Learn more about Energy from given link

https://brainly.com/question/13881533

#SPJ1

Phosphatidylserine is a type of phospholipid that is mainly found in cell membranes. Its structure is made up of two fatty acid chains, a phosphate group, a serine molecule, and a glycerol molecule.

The fatty acid chains are hydrophobic, meaning they repel water, while the phosphate group and serine molecule are hydrophilic, meaning they attract water.

The glycerol molecule acts as a bridge that connects the two fatty acid chains to the phosphate group and serine molecule.
The structure of phosphatidylserine is important for its function in the cell membrane.

Because of the hydrophobic and hydrophilic components of its structure, phosphatidylserine is able to form a lipid bilayer, which is a barrier that separates the inside of the cell from the outside environment.

The hydrophilic heads of the phosphatidylserine molecules face outward and interact with water, while the hydrophobic tails face inward and repel water.
Phosphatidylserine also plays a role in cell signaling and apoptosis, which is programmed cell death.

It acts as a signaling molecule by binding to proteins that are involved in cellular pathways.

In addition, phosphatidylserine is translocated to the outer leaflet of the cell membrane during apoptosis, which signals to immune cells that the cell is ready to be removed.
In conclusion, the structure of phosphatidylserine is made up of two fatty acid chains, a phosphate group, a serine molecule, and a glycerol molecule. Its hydrophobic and hydrophilic components allow it to form a lipid bilayer in cell membranes, and it also plays a role in cell signaling and apoptosis.

For more such questions on Phosphatidylserine

https://brainly.com/question/16179573

#SPJ8

Answer:

The volume of Component 1 is 36 cubic inches.

Explanation:

To calculate the volume of a composite solid, we need to determine the individual volumes of the different components and then add them together.

In this case, the composite solid consists of multiple components with the following dimensions:

Component 1:

Length: 4 inches

Width: 3 inches

Height: 3 inches

To find the volume of Component 1, we multiply the length, width, and height together:

Volume of Component 1 = Length x Width x Height = 4 in x 3 in x 3 in = 36 cubic inches

Therefore, the volume of Component 1 is 36 cubic inches.

Please provide the dimensions of the remaining components of the composite solid, and I will calculate the total volume by summing up the individual volumes.

105.7 moles of gas would be present in the Martian atmosphere sample.

The diameter of Mars is around half that of Earth, and its atmosphere is significantly thinner, having a volume less than 1% of Earth's. The Earth's atmosphere is primarily nitrogen- and oxygen-rich, whereas the atmosphere is primarily carbon dioxide-based.

PV = nRT

T = 27°C + 273.15 = 300.15 K

Next, we can solve for n:

n = PV/RT

The pressure is given as 8.0 mm Hg, which we need to convert to atm:

1 atm = 760 mm Hg

So:

P = 8.0 mm Hg / 760 mm Hg/atm = 0.0105 atm

The gas constant is:

R = 0.08206 L·atm/K·mol

So:

n = (0.0105 atm)(22. m3)/(0.08206 L·atm/K·mol)(300.15 K) = 105.7 mol

To know more about atmosphere visit:-

https://brainly.com/question/28734860

#SPJ1

Answer:

More energy is released from the old substance than the new substance needs to form its chemical bonds

Explanation:

Chemical A and Chemical B react in an exothermic reaction. When Chemical A and Chemical B are mixed together more energy will be released from the old substance than the new substance will need to form its chemical bonds. Therefore, option B is correct.

When a chemical reaction goes on, energy is shifted to or from the surroundings. When energy is moved to the surroundings, this is called an exothermic reaction, and the temperature of the surroundings increases.

Examples of exothermic reactions are combustion reactions and many oxidation reactions.

A chemical reaction is exothermic if heat is passed by the system into the surroundings. Because the surroundings are deriving heat from the system, the temperature of the surroundings increases.

Thus, option B is correct.

To learn more about the exothermic reaction, follow the link;

https://brainly.com/question/10373907

#SPJ6

Answer:

To determine the change in mass of A over the given time period, we need to find the difference between the initial mass of A and the final mass of A.

From the given table, we can see that the initial mass of A at t = 0 (start time) is 12.4 g and the final mass of A at t = 60 minutes (end time) is 6.2 g.

Therefore, the change in mass of A over 60 minutes is:

Final mass of A - Initial mass of A

= 6.2 g - 12.4 g

= -6.2 g

The negative sign indicates that the mass of A decreased over time, which means that A underwent some kind of reaction or process that caused it to lose mass.

The change in mass of A over 60 minutes is -6.2 grams.

To determine the change in mass of A over 60 minutes, we need to compare the initial mass to the final mass.

From the given information, we can see that the mass of A decreases over time.

Let's calculate the change in mass.

Initial Mass of A: 12.4 g

Final Mass of A: 6.2 g

Change in Mass of A = Final Mass of A - Initial Mass of A

= 6.2 g - 12.4 g

= -6.2 g

The change in mass of A over 60 minutes is -6.2 grams.

Note that the negative sign indicates a decrease in mass.

For such more questions on mass

https://brainly.com/question/1838164

#SPJ8

The calculated formula masses to 133.5 amu, we find that the substance with a formula mass closest to 133.5 amu is (d) AlCl3. Therefore, the answer is option D.

To identify the substance with a formula mass of 133.5 amu, we need to calculate the formula mass of each given substance and compare it to 133.5 amu.

(a) MgCl2:

The formula mass of MgCl2 can be calculated by adding the atomic masses of magnesium (Mg) and chlorine (Cl).

Mg: atomic mass = 24.31 amu

Cl: atomic mass = 35.45 amu

Formula mass of MgCl2 = (24.31 amu) + 2(35.45 amu) = 95.21 amu

(b) SCl:

The formula mass of SCl can be calculated by adding the atomic masses of sulfur (S) and chlorine (Cl).

S: atomic mass = 32.07 amu

Cl: atomic mass = 35.45 amu

Formula mass of SCl = 32.07 amu + 35.45 amu = 67.52 amu

(c) BCl:

The formula mass of BCl can be calculated by adding the atomic mass of boron (B) and chlorine (Cl).

B: atomic mass = 10.81 amu

Cl: atomic mass = 35.45 amu

Formula mass of BCl = 10.81 amu + 35.45 amu = 46.26 amu

(d) AlCl3:

The formula mass of AlCl3 can be calculated by adding the atomic mass of aluminum (Al) and 3 times the atomic mass of chlorine (Cl).

Al: atomic mass = 26.98 amu

Cl: atomic mass = 35.45 amu

Formula mass of AlCl3 = 26.98 amu + 3(35.45 amu) = 133.78 amu. Option D

For more such questions on masses visit:

https://brainly.com/question/24191825

#SPJ8

The electrons move from left to right through the circle labeled "M" to reach the cathode, where reduction takes place.

If oxidation occurs on the left side of the fuel cell and reduction occurs on the right side, the movement of electrons can be described as follows: Electrons move from left to right through the circle labeled "M."

In a fuel cell, the process of oxidation takes place at the anode (labeled A) where the fuel is oxidized, releasing electrons. These electrons then flow through the external electrical circuit, represented by the wire connecting objects A and B. The electrons reach the cathode (also labeled A) on the right side of the cell, where reduction occurs.The circle labeled "M" represents the membrane or electrolyte in the fuel cell. This membrane allows the transport of ions but blocks the movement of electrons. As a result, electrons cannot flow directly through the electrolyte but must travel through the external circuit.

This movement of electrons through the external circuit is what generates an electric current that can be used to power electrical devices or systems.

for such more questions on reduction

https://brainly.com/question/21851295

#SPJ8

Answer:

.....

Explanation:

D0wnload Phot0Math......................

lithification is a complex process where sediments are compact under pressure, expel connate fluids and converted into solid rock.

A rock is the collection of solid (grains) mineral materials that grow or become cemented together. it can be a natural substance composed of solid crystals of different minerals that have been blend together into a solid lump.

The major types of rocks are:

learn more about Rocks here:

brainly.com/question/26046551

#SPJ1

Answer:

active transport requires energy and passive transport does not require energy

Explanation:

Answer:THE SIMPLE ANSWER JUST SAY IT ITS B
IT REQUIRES ENERGY

PLS MAKE ME BRAINLIEST I NEED AWARD

Explanation:

Answer

The answer of the mathematical operation to correct number of significant figures is

The volume the balloon will occupy at an altitude where the pressure is 0.600 atm and the temperature is -20.00 C is 6.15 L.

The ideal gas law can be used to solve the given problem, which is as follows:P1V1/T1 = P2V2/T2 Where:P1 is the initial pressure (1.00 atm)P2 is the final pressure (0.600 atm)V1 is the initial volume (4.50 L)V2 is the final volume (what we want to find)T1 is the initial temperature (20.00 C = 293.15 K)T2 is the final temperature (-20.00 C = 253.15 K)The problem does not provide the mass or number of moles of helium gas, but these quantities are not required to solve the problem as they cancel out in the calculation.The problem also does not mention any change in altitude, so we can assume that the balloon rises to an altitude where the pressure and temperature are lower.We can rearrange the equation above to solve for V2, which gives:V2 = (P1V1T2)/(P2T1) Substituting the given values gives:V2 = (1.00 atm × 4.50 L × 253.15 K)/(0.600 atm × 293.15 K)V2 = 6.15 L.

for such more questions on volume

https://brainly.com/question/29796637

#SPJ8

The 1930s saw natural disasters as well as manmade ones: For most of the decade, people in the Plains states suffered through the worst drought in American history, as well as hundreds of severe dust storms, or "black blizzards," that carried away the soil and made it all but impossible to plant crops.

Answer

MnO₂ Manganese IV oxide

MnBr₄ Manganese IV bromide

Explanation

Manganese has the oxidation number +4 in a number of compounds.

Therefore, the formulas and names compounds of Manganese +4 with oxygen and bromine will be as follows:

Oxygen has an oxidation number of -2

The formula of a compound of Manganese +4 with oxygen -2 = MnO₂

The name of the compound ( MnO₂) will be Manganese IV oxide

Bromine has an oxidation number of -1

The formula of a compound of Manganese +4 with bromine -1 = MnBr₄

The name of the compound ( MnBr₄) will be Manganese IV bromide

pH plus pOH equals 14. POH equals -log[OH-]. The pOH is a measure of a solution's basicity, whereas the pH is a measure of a solution's acidity.

The concentration of hydrogen ions in a solution is gauged by its pH value. The concentration of hydroxide ions in a solution is determined by its pOH value. The formula pH + pOH = 14 relates the pH and pOH.

You must know the hydroxide ion concentration in moles per liter to calculate the pOH of a solution. The following expression is used to calculate the pOH: pOH equals -log [OH-].

pH of oranges 3.5

pH of rainwater 6.2

pH of milk of magnesia 10.5

pH + pOH = 14

To know more about pOH visit:-

https://brainly.com/question/17144456

#SPJ4

In this letter, express gratitude to your uncle, a university professor, for his invitation and congratulate him on his achievements.

Here are the steps to be followed:

By following these steps, you can write a thoughtful and appreciative letter to your uncle, expressing your gratitude for his invitation and congratulating him on his achievements.

Know more about Letter here:

https://brainly.com/question/18879087

#SPJ8

Answer:

nucleosynthesis

Explanation:

The correct answer is nucleosynthesis.

After the hydrogen in the star's core is exhausted, the star can fuse helium to form progressively heavier elements, carbon and oxygen, and so on, until iron and nickel are formed. Up to this point, the fusion process releases energy. The formation of elements heavier than iron and nickel requires an input of energy.

In a supernova explosion, neutron capture reactions take place (this is not fusion), leading to the formation of heavy elements. This is the reason why it is said that most of the stuff that we see around us comes from stars and supernovae (the heavy elements part).

Learn more about nucleosynthesis here https://brainly.com/question/20767918

#SPJ2

Answer:

B, C, E

Explanation:

did usatestprep

When the plunger is pulled out, pressure inside syringe decreases, lower pressure on balloon causes volume to increase,volume of the chamber also increases.

Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.

There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .

It is a scalar quantity which is related to the vector area element with a normal force acting on it.It is distributed over solid boundaries and across arbitary sections of fluid normal to the boundaries at every point.

Learn more about pressure,here:

https://brainly.com/question/18107358

#SPJ5

Answer: 3 4 a noodles

Explanation: just is\(\lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \sqrt{x} x^{2} x^{2}\)

Answer:

Number of moles = 0.21 mol

Explanation:

Given data:

Mass of NaOH = 8.45 g

Number of moles = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of NaOH = 40 g/mol

by putting values in formula

Number of moles = 8.45 g / 40 g/mol

Number of moles = 0.21 mol