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Which number line shows the graph of x 11?

Explanation and Answer:

When trying to find the mass of a substance from the mass of another substance using a chemical equation we have to follow some steps.

Before starting solving the problem we have to make sure that we have a balanced equation of the reaction. The steps are:

1. Make sure that we are working with a balanced chemical equation.

2. Convert the mass of the given compound to moles using its molar mass.

3. Convert the moles of the given compound into moles of the target compound using their molar ratio. Their molar ratio will be given by the relationship of their coefficients in the equation of the reaction.

4. Convert the moles of the target compound into grams using its molar mass.

Answer:

Explanation:

To solve this problem, we can use the ideal gas law:

PV = nRT

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

At STP (standard temperature and pressure), the temperature is 0°C or 273.15 K, and the pressure is 1 atm or 101.325 kPa.

We can use the ideal gas law to find the number of moles of chlorine gas in the sample:

n = PV/RT

where P is the pressure, V is the volume, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the given temperature of 25.2°C to Kelvin:

T = 25.2°C + 273.15 = 298.35 K

Now we can calculate the number of moles of chlorine gas in the sample:

n = (100.8 kPa)(353.2 mL)/(8.314 J/K/mol)(298.35 K)

n = 0.0158 mol

Next, we can use the number of moles and the ideal gas law to find the volume at STP:

V = nRT/P

V = (0.0158 mol)(8.314 J/K/mol)(273.15 K)/(101.325 kPa)

V = 0.364 L or 364 mL

Therefore, the volume of the chlorine gas at STP would be 364 mL.

The mass of the nitrogen gas is approximately 949 grams.

The mass of the nitrogen gas can be calculated using the ideal gas law, which states:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles of gas, R is the gas constant, and T is the temperature in Kelvin. R is the ideal gas constant ( 0.08206 Latm/molK )

Given thw volume of the Nitrogen gas to be 759l, at ST, temperature equals 273.15 K and pressure 1 atm.

we can rearrange the ideal gas law to solve for n:

PV = nRT

n = PV / RT

Plug in the values

n = ( 1 atm × 759 L ) / ( 0.08206 Latm/molK × 273.15 K )

n = 33.86 mol

Finally, we can calculate the mass of the nitrogen gas using the molar mass of nitrogen:

m = n × M

Where M = 28.02 g/mol is the molar mass of nitrogen.

m = 33.86 mol × 28.02 g/mol

m = 949 g

Therefore, the mass is 949 g.

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Answer:

c

Explanation:

metals are good conductors, while non metals are not good conductors

Answer:

9.03 x 10²³atoms

Explanation:

Given parameters:

Number of moles of CO₂  = 1.5mol

Unknown:

Number of atoms  = ?

Solution:

In a mole of a substance, we have the Avogadro's number of particles which is 6.02 x 10²³atoms.

  Using this number, we can determine the amount of atoms in any substance.

If;

       1 mole of CO₂ contains 6.02 x 10²³ atoms;

     1.5mole of CO₂ will contain 1.5 x 6.02 x 10²³ atoms

                                                = 9.03 x 10²³atoms

Answer:

60 grams

Explanation:

We have the balanced equation (without state symbols):

6

H

2

O

+

6

C

O

2

→

C

6

H

12

O

6

+

6

O

2

So, we would need six moles of carbon dioxide to fully produce one mole of glucose.

Here, we got  

88

g

of carbon dioxide, and we need to convert it into moles.

Carbon dioxide has a molar mass of  

44

g/mol

. So here, there exist

88

g

44

g

/mol

=

2

mol

Since there are two moles of  

C

O

2

, we can produce  

2

6

⋅

1

=

1

3

moles of glucose  

(

C

6

H

12

O

6

)

.

We need to find the mass of the glucose produced, so we multiply the number of moles of glucose by its molar mass.

Glucose has a molar mass of  

180.156

g/mol

. So here, the mass of glucose produced is

1

3

mol

⋅

180.156

g

mol

≈

60

g

to the nearest whole number.

So, approximately  

60

grams of glucose will be produced.

Answer:

Newton believed that gravity was a force.

The law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.

Newton was the first to have the idea that gravity is everywhere.

Answer:every object attract every other object

Explanation:

Answer:

A. A as concentration decreases.

Explanation:

A represents a reactant and B is a product, the concentration of the latter increases at the expense of the concentration of the former. Hence, A is the reactant of the chemical reaction as its concentration decreases.

The number of protons in an atom always determines its identity.

Each atom has a unique number of protons in its nucleus, which is also known as the atomic number. This number is what distinguishes one element from another.

For example, all carbon atoms have six protons, while all oxygen atoms have eight protons. The number of protons also determines the arrangement of electrons around the nucleus, which plays a role in chemical reactions.

While the number of neutrons and electrons can vary within an element, the number of protons remains constant and determines the identity of the atom.

This is why the periodic table is arranged by atomic number, as it groups together elements with the same number of protons and therefore similar chemical properties. Overall, the number of protons in an atom is the key characteristic that determines its identity.

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Answer: hope this helps :)

Explanation:

Heterogeneous:

soy sauce, pizza, fruit salad, halo halo, iced mango juice (assuming this is a mango milkshake), sago milk tea

Homogeneous:

vinegar, salt solution, sugar syrup

abno ka hahaha hatdog hamburger

CaCl 2(aq)→Ca 2+(aq)+2Cl −(aq) is a dissοciatiοn equatiοn fοr hοw calcium chlοride dissοciates in water.

A chemical reactiοn is the transfοrmatiοn οf οne οr mοre chemicals, knοwn as reactants, intο οne οr mοre new cοmpοunds, knοwn as prοducts. The change in cοncentratiοn οf any οf the reactants οr prοducts per unit οf time can be used tο determine the rate οr speed οf a reactiοn. It is determined by the equatiοn rate=time + cοncentratiοn.

When dissοlved in water, the lattice οf an iοnic crystal disintegrates. When an iοnic sοlid substance dissοlves, dissοciatiοn—the separatiοn οf iοns—οccurs. Iοnic substances that are placed in water will break apart intο a pοsitive iοn and a negative iοn, a prοcess knοwn as electrοlytic dissοciatiοn οr iοnic dissοciatiοn. Iοnizatiοn is a term used tο describe this kind οf dissοciatiοn respοnse. Iοnizatiοn is the name οf the reactiοn, while electrοlytic sοlutiοns are the results.

Therefοre,

CaCl 2(aq)→Ca 2+(aq)+2Cl −(aq) is a dissοciatiοn equatiοn fοr hοw calcium chlοride dissοciates in water.

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A given substance that has a melting point of -7C and a boiling point of 59C exists as a liquid at room temperature conditions.

The states of matter refer to the separation of the molecules of a given material in certain temperature conditions.

The states of the matter are three and include the gaseous state, liquid state and solid-state.

In conclusion, a given substance that has a melting point of -7C and a boiling point of 59C exists as a liquid at room temperature conditions.

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The salt obtained from the combination of the weak acid cyanic acid, hcno, and the weak base ammonia, nh3, is used to make an aqueous solution. is the solution basic.

The weak acid of such a buffer system is created when it interacts with both the conjugate base of the buffer system. The pH then just slightly declines, the weak acid concentration rises, and the conjugate base concentration falls.

The acid and base would react to create an acidic solution in a weak base-strong acid titration. During the titration, a conjugate acid would be created, which will subsequently react with water to create hydronium ions. Consequently, a solution with such a pH under 7 is produced.

Therefore, The salt obtained from the combination of the weak acid cyanic acid, hcno, and the weak base ammonia, nh3, is used to make an aqueous solution. is the solution basic.

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Answer:

b

Explanation:the shell is 2 so ignore the 1s electrons it is only the level 2 electrons that are valence

Answer:

Sodium oxide is the product

Explanation:

4Na+O2->2Na2O

Answer:

Curd is acidic in nature, because an acidic substance has less value of pH. A milkman adds a very small amount of baking soda to fresh milk. Why does he shift the pH of the fresh milk from 6 to slightly alkaline? Answer: By making the milk more alkaline, it takes more time to turn into curd.

Answer:

call an vet ASAP 10 pounds of chocolate is very bad for a dog.

Explanation:

Chocolate is one of the worst things a dog can eat, and 10 pounds of it is worst! Take your dog to the vet IMMEDIATELY! I hope that that the dog will survive.

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The frequency of light required to remove the valence electron(s) from an atom is known as the ionization energy. The ionization energy is dependent on the atomic structure and is specific to each element.

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The factor that will increase the rate of the function of the enzyme A is increasing the temperature to 70°C (option A).

Enzymes are biological catalysts meaning that they regulate the rate of biochemical reactions in living cells.

Enzymes lower the activation energy of a reaction, which is the required amount of energy needed for a reaction to occur. Enzymes do this by binding to a substrate and holding it in a way that allows the reaction to happen more efficiently.

The factors that affect the rate of function of na enzyme are as follows:

Each enzyme has an optimum pH range. This means that changing the pH outside of this range will slow enzyme activity, however, raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction.

Therefore, the increase of temperature will increase the rate of function of the enzyme A.

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Answer:

The orest one is possible D

Explanation:

Precipitate X is yellow while precipitate Y is white

The color of a lead precipitate can depend on a variety of factors, including the chemical composition of the precipitate, the size and shape of the particles, and the lighting conditions under which it is viewed. In the case of lead(II) iodide, the yellow color is due to the absorption of light in the visible spectrum by the compound's molecular structure.

The specific arrangement of atoms in the lead(II) iodide molecule causes it to absorb blue light, leaving only yellow light to be transmitted or reflected, which gives the compound its yellow color.

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A redox reaction's hydroxide ion component involving oxidation or reduction is referred to as a half reaction. By taking into account, we get a half reaction.

The diatomic anion OH, which is made up of oxygen and hydrogen atoms, is most frequently referred to in chemistry as hydroxide. It is among the known simplest diatomic ions. The group of substances that contain the hydroxide ion is referred to as "hydroxide" as well.

Galvanic cell with Zn and Cu as an example. CuSO4(aq) Zn(s) + CuSO4(aq) (s) Oxidation occurs at the Zn anode (the metal loses electrons). This can be seen in the oxidation half-reaction shown below (see how the electrons are on the products side): Zn(s) equals Zn2+ + 2e.

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The first one appear to be a pan with some liquid heating up.

The beginning state is liquid, the phase change type is a vaporization and its ending state is gas.

The second one seems to be a ice cube melting.

Its beginning phase is solid, the phase change type is fusion, and its ending state is liquid.

The third one is water, or other liquid, making clouds.

The beginning state is liquid, the phase change type is a vaporization and its ending state is gas.

The fourth illustration seems to be an aluminium can. There aren't really a phase change happening, but when we open the aluminium can containing gaseous drink, there are molecules of gas diluted into the liquid and some of it encouter each other to make a bubble of the gas and is released. It is not an actually phase change, it is the reverse process of diluting gas into liquid. Initially it is diluted gas, it gets released and in the end it is in gas phase.

Answer:

Covalent bonds form from shared electrons. Nature favors chemical bonding because most atoms have lower potential energy when they are bonded to other atoms than they have when they are independent particles.

Answer:

a. the 3 represents the principal energy level

Explanation:

3 is the principal energy level. The p is the sublevel. 4 is the possible occupying electron.

Answer:

A

Explanation:

Conditions are optimal for upwelling along the coast when winds blow along the shore. Winds blowing across the ocean surface push water away. Water then rises up from beneath the surface to replace the water that was pushed away. This process is known as “upwelling.”

Answer:

Can i have brainlest ITS B

Explanation:

The forces of attraction between the free-floating valence electrons and the positively charged metal ions. Why are metals good conductors of electric current? Electrons can flow freely in metal.