How much energy is transferred by 1C of charge if the the oven works on a potential difference of 230 V

Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions.

Matter cannot be created or destroyed in chemical reactions. This is the law of conservation of mass. In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions

Answer:

I do not understand but,

Explanation:

There are 18 groups, 18 columns, and 118 elements at the time of this response.

Here is a map of the periodic table for any more help that you might need.

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Answer: Magnesium turns red litmus blue and sulphur turns blue litmus red.

Explanation:

When a metal reacts with oxygen present in air, it forms basic oxide which simply means when they react with water, they form basic solution.

The chemical equation for the burning of magnesium (metal) in air and reaction with water of the product so formed are as follows:

\(2Mg+O_2\rightarrow 2MgO\)

\(MgO+H_2O\rightarrow Mg(OH)_2\text{ (base)}\)

When a non- metal reacts with oxygen present in air, it forms acidic oxide which simply means when they react with water, they form acidic solution.

The chemical equation for the burning of sulphur (non-metal) in air and reaction with water of the product so formed are as follows:

\(S+O_2\rightarrow SO_2\)

\(SO_2+H_2O\rightarrow H_2SO_3\text{ (acid)}\)

There are 2 types of litmus:

Therefore, here, magnesium forms a basic solution, therefore it will turn red litmus blue whereas sulphur forms an acidic solution, so it will turn blue litmus red.

In which one element replaces a similar element in a compound?

A single-replacement reaction

A single-replacement reaction is a reaction in which one element of a compound is replaced by another.

Answer:

Wait what, howd he do that

Answer:

pH = 6.999

The solution is acidic.

Explanation:

HBr is a strong acid, a very strong one.

In water, this acid is totally dissociated.

HBr + H₂O  →  H₃O⁺  +  Br⁻

We can think pH, as - log 7.75×10⁻¹² but this is 11.1

acid pH can't never be higher than 7.

We apply the charge balance:

[H⁺] = [Br⁻] + [OH⁻]

All the protons come from the bromide and the OH⁻ that come from water.

We can also think [OH⁻] = Kw / [H⁺] so:

[H⁺] = [Br⁻] + Kw / [H⁺]

Now, our unknown is [H⁺]

[H⁺] =  7.75×10⁻¹² + 1×10⁻¹⁴ / [H⁺]

[H⁺] = (7.75×10⁻¹² [H⁺] + 1×10⁻¹⁴) /  [H⁺]

This is quadratic equation:  [H⁺]² - 7.75×10⁻¹² [H⁺] - 1×10⁻¹⁴

a = 1 ; b = - 7.75×10⁻¹² ; c = -1×10⁻¹⁴

(-b +- √(b² - 4ac) / (2a)

[H⁺] = 1.000038751×10⁻⁷

- log [H⁺] = pH → 6.999

A very strong acid as HBr, in this case, it is so diluted that its pH is almost neutral.

The closest answer to our result is E) 9.52 × 10^20 sodium ions.

To determine the number of sodium ions in 99.6 mg of Na2SO3, we'll first convert the mass to moles, and then use Avogadro's number to find the number of ions.

1. Convert mass to moles: (99.6 mg) * (1 g/1000 mg) = 0.0996 g
2. Moles of Na2SO3: (0.0996 g) / (126.05 g/mol) = 0.000790 moles
3. Moles of sodium ions: 0.000790 moles Na2SO3 * (2 moles Na / 1 mole Na2SO3) = 0.00158 moles Na
4. Number of sodium ions: (0.00158 moles) * (6.022 × 10^23 ions/mol) = 9.51 × 10^20 sodium ions

The closest answer to our result is E) 9.52 × 10^20 sodium ions.

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Answer:

see explanation below

Explanation:

Yes

Mg(NO3)2 + Na3PO4 => Mg3(PO4)2 + 3NaNO3

Magnesium phosphate, Mg3(PO4)2, is a white product that is insoluble in water. Sodium nitrate, NaNO3, is soluble in water making it clear solution.

The statements that does not support the Kinetic Molecular Theory is (option A) the particles of an ideal gas are separated by short distances, compared to their size.

The kinetic molecular theory is a scientific model that explains the behavior of gases based on the motion of their constituent particles. It makes several assumptions about the behavior of gas molecules and how they interact with each other and their surroundings.

In an ideal gas, the particles are considered to be point masses that have negligible volume and do not interact with each other except through elastic collisions.

Therefore, the particles of an ideal gas are considered to be separated by long distances, because there is no attraction or repulsion between the particles, and they move freely in a random motion in the available volume of the container.

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Answer:

OA. YESS

Explanation:

They will because they are all over America.

Answer: Kilogram, the new SI unit for mass

Explanation:

:)

Answer:

Hydroxyl (alcohol compound)

Explanation:

*view photo*

D. Hydroxy

Therefore, the correct option is option D.

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Answer:

The series of chemical reactions that are used to change natural resources into synthetic products is called chemical synthesis. To make a "natural" product, the natural resource is not chemically changed as much. ... For example, the synthetic material plastic is made from petroleum, which is pumped out of the earth.

Explanation:

give brainliest!!!!

The use of synthetic products impact the natural resources from which they are derived by depleting the natural resource and causing harm to it.

Resources which are obtained  from nature by a few modifications in them are called natural resources.These are resources which are available in nature . Every synthetic product is composed of natural resources.

It may exist in a form of separate entity or in form of living-beings or the can even be transformed into products which are of economic importance.Because of the transformation of natural resources into products of economic importance they are getting depleted at a rate  which much times greater than the rate it was getting depleted several years ago.

As the products available today comprise  of synthetic products natural resources are getting depleted which is becoming a global concern.

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Answer:

C:  \(\frac{6 mol}{2 L}\)

Explanation:

we can use the molarity equation

\(M = \frac{mol}{L}\)

so to find M we plug in what we know, which is 6 moles of NaCl and 2 L of water, which gives us:

\(\frac{6 mol}{2 L}\)

Answer:6 mol/2L

Explanation:just took the quiz

The molecular equation for the reaction between hydrochloric acid and calcium carbonate can be written as:

HCl + CaCO3 → CaCl2 + CO2 + H2O

Hard water is water that contains a high concentration of dissolved minerals, specifically calcium and magnesium ions. These minerals are picked up by the water as it flows through soil and rocks, such as limestone, chalk, or gypsum.

The degree of water hardness is usually measured in parts per million (ppm) of calcium carbonate. Water with a concentration of calcium carbonate between 60-120 ppm is considered moderately hard, while water with a concentration above 120 ppm is considered hard.

The molecular equation for the reaction between hydrochloric acid and calcium carbonate can be written as:

HCl + CaCO3 → CaCl2 + CO2 + H2O

In this reaction, the hydrochloric acid (HCl) reacts with the calcium carbonate (CaCO3) to produce calcium chloride (CaCl2), carbon dioxide (CO2) gas, and water (H2O). The bubbling and fizzing observed during the reaction is due to the release of carbon dioxide gas.

Therefore, base on the equation HCl + CaCO3 → CaCl2 + CO2 + H2O  calcium chloride and water produced are both soluble in water and do not contribute to the hard water deposit.

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Answer:

I think it is lightning

Explanation:

Lightning creates an electricity and it has lots of energy, so I think that it is lightning

Answer:

Good morning as well! The answer to this question is lightning.

Explanation:

Lightning is a source of electrical energy. Lightning also has a certain amount of voltage. Frozen raindrops bump into each other in the air causing an electrical charge. Therefore, lightning is created.

Answer:

hello :3

A cold is a contagious upper respiratory infection that affects your nose, throat, sinuses and trachea (windpipe).

Explanation:

have a nice day :3

The ionization energy of an element decrease with growing atomic length. as the force of attraction between the nucleus and electron decreases with increasing size.

It will become clean to take away the outermost electron from an atom. for that reason, much less strength is needed to cast off an electron from its valence shell.

Ionization energy, ionization strength is the minimum strength required to take away the maximum loosely bound electron of an isolated gaseous atom, fantastic ion, or molecule.

The ionization energy of atoms denoted Ei, is measured with the aid of locating the minimum power of light quanta (photons) or electrons expanded to recognized electricity so one can kick out the least certain atomic electrons. The dimension is finished in the gas segment on single atoms.

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The amount of lithium nitrate that will be needed to make 350.00 grams of lithium sulfate is equal to 438.84 g.

A limiting reagent can be demonstrated as the reactant in the reaction which is exhausted first while the completion of a chemical reaction.

The limiting reagent in a particular reaction decides the yield of the product whenever the reactants will not be taken in stoichiometry.

Given, chemical reaction of  lithium nitrate and lead sulfate is:

Pb(SO₄)₂ + 4 LINO₃ →  Pb(NO₃)₄+ 2 Li₂SO₄

The mass of the lithium sulfate = 350 g

The number of moles of lithium sulfate = 350/109.94 = 3.18 mol

The 2 moles of lithium sulfate react with lithium nitrate = 4

Then 0.233 moles of lithium sulfate react with lithium nitrate = 4/2 × 3.18 = 6.36 mol

The mass of the lithium nitrate = 69 × 6.36 = 438.84 g

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Answer:

0.497 moles/L

Explanation:

The reaction that takes place is:

First we calculate the moles of lactic acid in 0,821 g, using its molar mass:

One mole of lactic acid reacts with one mole of sodium hydroxide (it is a monoprotic acid), so in 18,34 mL of NaOH solution there are  9,122x10⁻³moles of NaOH:

The order from shortest to longest covalent bond length is: CO < NH3 < CH4 < PH3 < SiH4.

The following five covalent bonds found in camp (carbon monoxide, ammonia, methane, phosphine, and silane) can be ordered from shortest to longest based on the van der Waals radii of the bonded atoms.

Carbon Monoxide (CO): The bond length between carbon and oxygen is the shortest among the five bonds.

Ammonia (NH3): The bond length between nitrogen and hydrogen in ammonia is slightly longer than the bond length in CO.

Methane (CH4): The bond length between carbon and hydrogen in methane is longer than the bond length in NH3.

Phosphine (PH3): The bond length between phosphorus and hydrogen in phosphine is longer than the bond length in CH4.

Silane (SiH4): The bond length between silicon and hydrogen in silane is the longest among the five bonds.

So, the order from shortest to longest covalent bond length is: CO < NH3 < CH4 < PH3 < SiH4.

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The new pressure, when the temperature is increased to 65 °C and the volume is held constant, is approximately 1.323 atm.

To find the new pressure when the temperature is increased to 65 °C and the volume is held constant, we can use Charles's Law, which states that at constant pressure, the volume of a gas is directly proportional to its temperature.

Since the volume is held constant, we can use the formula:
(P₁/T₁) = (P₂/T₂)

Given:
P₁ = 1.25 atm
T₁ = 45 °C + 273.15 (convert to Kelvin)

= 318.15 K
T₂ = 65 °C + 273.15 (convert to Kelvin)

= 338.15 K

Now, let's substitute the values into the formula:
(1.25 atm / 318.15 K) = (P₂ / 338.15 K)

To find P₂, we can cross-multiply and solve for P₂:
P₂ = (1.25 atm * 338.15 K) / 318.15 K

Calculating that, we get:
P₂ ≈ 1.323 atm

So, the new pressure, when the temperature is increased to 65 °C and the volume is held constant, is approximately 1.323 atm.

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Answer:

\({ \tt{let \: the \: oxidation \: state \: be \: x}} \\ { \bf{x + sulphate \: ion+ water = overall \: charge}} \\ \\ \\ { \tt{x + ( - 2) + 0 = 0}} \\ \\ { \tt{x = + 2}} \\ { \tt{oxidation \: state = + 2}}\)

5.31g of magnesium chloride.

We'll start with the lead (IV) chloride formula. as well as how many chloride ions are present. Lead is in the 4+ oxidation state, as indicated by the (IV). Because the chloride ion is monovalent, it will require four chloride ions to balance the charge.

Pb(Cl)4

This means that for every mole of lead(IV) chloride present, there are four moles of chloride ions available. 349g/mol is the molar mass. The chloride moles are then:

\(9.73g \times \frac{1mol}{349g} \times \frac{4mol \: { cl}^{ - } }{1mol \: {pbcl}4 } = 0.1115mol \: {cl}^{ - } \)

we need 0.1115 moles of chloride ions.

magnesium is a 2+ cation and formula for magnesium chloride is : MgCl2

the molar mass is 95.2g/mol. 1 mol of magnesium chloride

gives 2 mole of chloride ions. to calculate mass of magnesium chloride needed to supply 0.1115moles of chloride,

\(0.111mol {cl}^{ - } \times \frac{1mol \: mgcl2}{2mol \: cl} \times \frac{95.2g}{1mol} = 5.31g \: mgcl2 \)

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Answer:

Mercury

Explanation: Under standard conditions mercury is a shiny, heavy, silvery liquid. It is the only metal that is liquid at room temperature.

Answer:

Mercury, Venus, earth and mar, Jupiter, Saturn, urines, Neptune.

Explanation:

Answer:

Product: Substance at the end of a reaction

Reactant: Substance at the beginning of a reaction

Coefficient: Number placed before a compound in a chemical equation

The statement, that describes the matching each term is "Product -Substance at the end of a reaction, Reactant - Substance at the beginning of a reaction , Coefficient - Number placed before a compound in a chemical equation."

Reactants are the chemicals that participate in a chemical reaction. Products are substances created as a result of the production of new bonds in a chemical process.

A reactant is a material that exists at the beginning of a chemical reaction. The substance(s) to the left of the arrow are referred to as reactants, while those to the right of the arrow are referred to as products. A product is a material that results from a chemical process.

Coefficients are the numbers that are placed in front of formulas to balance equations, and they multiply all of the atoms in a formula.

Hence, the correct option is 1-a, 2-b, 3-c.

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Answer: B

Explanation:

The total mass of the products is 853.8 g.

We know that we have to apply the principles of stoichiometry so as to be able to obtain the mass of the mass of the products and then the total mass of the products that is obtained in the reaction.

We have that in the question; 496. 5 grams of lead II nitrate reacts with potassium bromide is such a way that the lead II nitrate would be completely consumed in the reaction. This means that the lead II nitrate is the limiting reactant in the reaction.

Number of moles of the lead II nitrate = 496. 5 grams /331 g/mol

= 1.5 moles

If 1 mole of  lead II nitrate produces 1 mole of lead II bromide

Mass of lead II bromide produced = 1.5 moles * 367 g/mol

= 550.5 g

If 1 mole of lead II nitrate produces 2 moles of potassium nitrate

1.5 moles of lead II nitrate produces  1.5 * 2 /1

= 3 moles of  potassium nitrate

Mass of  potassium nitrate = 3  moles * 101.1

= 303.3 g

Total mass produced = 550.5 g + 303.3 g

= 853.8 g

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