What is the formula for sulfate?
What is the charge of sulfate?
What is the correct formula for copper (II) sulfate?

A 130 kg object weighs approximately, 1274 Newtons on Earth.

The weight of an object on Earth can be calculated using the formula:
Weight = mass × acceleration due to gravity
Weight is calculated by multiplying the mass of an object by the acceleration due to gravity. On Earth, the acceleration due to gravity is approximately 9.8 meters per second squared (9.8 m/s²).

In this case, we have a 130 kg object. To find its weight on Earth, we can use the formula:

Weight = mass × acceleration due to gravity

Weight = 130 kg × 9.8 m/s²

Weight = 1274 Newtons (N)

So, the weight of a 130 kg object on Earth is approximately 1274 Newtons.

Therefore, a 130 kg object weighs approximately, 1274 Newtons on Earth.

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B) 1 and 3

it's the right answer

Answer:

For 3rd question, the answer is option D

The description of the molecules shown is it is unsaturated alkynes. The correct option is A.

Alkynes are unsaturated double bond containing compound that react with hydrogen when a catalyst is present.

The pie bond shows that the hydrogen atoms are lost from the alkanes.

Thus, the correct option is A, unsaturated alkynes.

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Answer:

B

Explanation:

Edge 2023

Answer: The two categories is porous evidence and nonporous evidence. Nonporous item of evidence is when you put the latent print on the surface and it just sits on the surface. Porous item of evidence is when you put the latent print on the surface and it absorbs the latent print deposit.

Answer:

A. Offspring are genetically identical to the parent.

That's the answer. I hope it helps!

The statement which describes asexual reproduction but not sexual

reproduction is A. Offspring are genetically identical to the parent.

Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes.

The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent.

An Asexual reproduction means that the parent organism will simply split into two child organisms, and that there will be no mixing of the DNA, as it is the case in case of the sexual reproduction which mixes up the DNA.

Therefore the child and the parent organism will contain exactly the same genetic material - the correct answer is A.

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Air is a mixture, Its constituens can be seperated

Answer:

20.0 sec

you can use ln (2)=k* t1/2 then ln N2/N1=-k(t2-t1)

or just divide 100 by 2 then 50 by 2 then 25 by 2 then 12.5 by 2 and that is 4 half lifes at 5 secs each

Explanation:

Answer:

the answer is electric

Explanation:

i think so

Answer:

Yes.

Explanation:

A combination reaction can be a redox reaction.

Example; C + O2 = CO2

Answer:

C:sun

Explanation:

Answer:

1) 1-buten (longest carbon chain has 4 C, -en means double bond)

2) 2-penten

3) 3-methyl-2-penten

4) 3-methyl-2-buten

5) 1,1-dichlorpropen

6) 2-penten

Answer:

Second-degree burns, or partial thickness burns, are more severe than first-degree burns. They affect the outer layer of skin, called the epidermis, and part of the second layer of skin, called the dermis. Second-degree burns can be very painful and often take several weeks to heal.

Explanation:

Answer:

See explanation

Explanation:

1) From the reaction equation;

2 moles of KClO3 yields 2 moles of KCl

Hence,

4 moles of KClO3 yields 4 * 2/2 = 4 moles of KCl

2) Given that from the reaction equation, we have;

Burning 3 * 6.02 * 10^23 molecules of oxygen yields 2 * 22.4 L of CO2

Hence,

7 * 10^25 molecules of oxygen yields 7 * 10^25 * 2 * 22.4 / 3 * 6.02 * 10^23

= 313.6 * 10^25/18.06 * 10^23

= 17.36 * 10^2

= 1736 L

Answer:

7.08 cm

Explanation:

For number 1;

Rf = d1/d2

d1/12 cm

Rf = 1.0

d1 = 12 * 1

d1 = 12.0 cm

For number 2

Rf = d1/d2

Rf = 0.41

0.41= d1/12

d1 = 0.41 * 12

d1 = 4.92 cm

Separation distance= 12.0 - 4.92 = 7.08 cm

Answer:

e, beacause that is the higher voltage

Explanation:

calculate

Answer:

No. You can not simplify a coefficient of.

Explanation:

:)

Answer:

Ice

Explanation:

its sooooooooooo easy

When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%.

Answer: b

Explanation:

Answer:

Yes oxygen is more reactive than beryllium

Elemental beryllium is very unreactive towards air and water, even at high temperatures.

Answer:

A

Explanation:

Explanation:

no lo c crack solo es para poder iniciar la sección y no c ingel Jaksjs

Answer:

it would be 4.5 mole left over

Explanation:

The greatest amount of MgO will be 7.8 mole and Mg will be limiting reagent.

The substance that would be entirely absorbed in the end of the chemical process is called as the limiting reagent.

A mole would be defined as the quantity of a material that includes precisely 6.02214076 X [tex]10^{23}[/tex] of the particular chemical elementary entities.

Calculation of amount of  MgO

The balanced chemical equation is 2 Mg + [tex]O_{2}[/tex] → 2MgO

It can be seen that 2 mole of Mg reacts with 1 mole of oxygen.

So, 7.8 mole of Mg = 7.8 / 2 = 3.9 mole of [tex]O_{2}[/tex].

Since, [tex]O_{2}[/tex] will be added in given reaction vessel will be 4.7 moles.

So, (4.7 - 3.9) = 0.8 moles of [tex]O_{2}[/tex] left but in this case Mg will be finished. Therefore, Mg will be limiting reagent.

It can be understood that 2 moles of Mg will give 2 mole of MgO.

That's why , 7.8 moles of Mg = 2 × 7.8 / 2 = 7.8 moles of MgO.

Therefore, 7.8 mole of magnesium oxide (MgO) could be generated and Mg will be limiting reagent.

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Answer:

The equation is not balanced.

Explanation:

The Law of Conservation of Matter is also called the law of conservation of mass or the Lomonosov-Lavoisier Law. This law postulates that "the mass is neither created nor destroyed, it only transforms." This means that the reactants interact with each other and form new products with different physical and chemical properties than the reactants because the atoms of the substances are arranged differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the amounts of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends. . In other words, then the mass before the chemical reaction equals the mass after the reaction. The exception to the rule is nuclear reactions, in which it is possible to convert mass into energy and vice versa.

This is, te law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts.  

The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.

Then, taking into account all of the above, you can determine the amount of elements on each side of the equation:

Left side: 2 hydrogen H and 2 oxygen O  

Right side: 2 hydrogen H and 3 oxygen O

Since the quantity of each element is different on each side of the reaction, the equation is not balanced.

The balanced equation is:

2 H₂O₂ → 2 H₂O + O₂  

Answer:

Electrons are trapped inside the atom because of the attraction forces with positively charged protons that are found in the nucleus.

Answer:

2

Explanation:

symbol of postassium is k and there is no symbol k. so i guess no2

Answer:

H₂S is the proton donor => Bronsted Acid

Explanation: