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Answer:

0.50603kg when you add given masses

Answer:

the total mass of product is equal to total mass of the reactance

The molecules of Li₂O that would produce if you used up 6 atoms of Li(s) is 3.

It is an unstable inorganic and radical compound, used in the manufacture of glass and ceramic.

The balanced equation

[tex]\rm 6 Li(s) + O_2(g) \rightarrow 3 Li_2O(s)[/tex]

If the atoms of lithium moves up to 6 the lithium oxide molecules will be 3, as you can see in the equation.

Thus, the molecules of Li will be 3.

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Answer:

1.79

Explanation:

Answer:

Explanation:

Salt (sodium chloride) is made from positive sodium ions bonded to negative chloride ions. Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions.

Answer: The answer is force.

Explanation:

Newtons 3rd law is from an action, there should be a reaction. so the planes moving it turns with force. ( this ould get a Brainliest answer)

Answer:

Breathing an atmosphere of pure oxygen would damage the delicate tissues and blood vessels in our lungs, so it's a good thing that most of our atmosphere is nitrogen.Nitrogen is a fairly inert chemical (it does react, but not nearly as much as oxygen - this is why it is fairly stable in the atmosphere, whereas oxygen has to constantly be regenerated by photosynthesis).

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During photosynthesis green plants use solar energy to produce fuel hence 'Energy in the form of sunlight must be added' that is option D is the correct option.

Photosynthesis is an endothermic reaction because green plants use solar energy in the form of sunlight, along with water and carbon dioxide in the air, to produce their food in the form of glucose.

Endothermic reactions are chemical reactions where the reactants utilize heat energy from the surroundings to form products.

Since energy as sunlight is used in the photosynthesis reaction, 'Energy in the form of sunlight must be added' that is option D is the correct option.

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Answer:

In 1913, Niels Bohr proposed a theory for the hydrogen atom, based on quantum theory that some physical quantities only take discrete values. Electrons move around a nucleus, but only in prescribed orbits, and if electrons jump to a lower-energy orbit, the difference is sent out as radiation.

Answer:

See below

Explanation:

Specific Heat of water =  4.186 J/(g-C)

J/(g-C)     multiplied  by  g   and C   results in J

4.186  * 540  * (95-32) = 142 407 .72 J

Answer:

It get thicker beacause the mid ocean

Explanation:

Because when it gets moved back the heat rises and it builds up to be thicker.

Copolymer have more than one kind of monomer in its repeating unit.

Those polymers that have more than one kind of monomer in its repeating unit are called Copolymers.

These are useful to modify the properties of polymers that needs more strength , durability etc.

It is a way of improving mechanical properties of a polymer .

A copolymer formed from two dissimilar molecules (as two olefins) is a codimer and the homopolymer and homodimer as the name suggest are made of one similar kind of monomers.

Copolymer have more than one kind of monomer in its repeating unit.

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Answer:

what is your questions I didn't understand

The final temperature of the copper and water in the calorimeter given the data is 30.3 °C

Heat loss = Heat gain

MᵥᵥC(Tᵥᵥ – Tₑ) = M꜀C(Tₑ – M꜀)

95 × 0.385 (77.9 – Tₑ) = 42 × 4.184(Tₑ – 20.4)

36.575(77.9 – Tₑ) = 175.728(Tₑ – 20.4)

Clear bracket

2849.1925 – 36.575Tₑ = 175.728Tₑ – 3584.8512

Collect like terms

2849.1925 + 3584.8512 = 175.728Tₑ + 36.575Tₑ

6434.0437 = 212.303Tₑ

Divide both side by 212.303

Tₑ = 6434.0437 / 212.303

Tₑ = 30.3 °C

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An arrangement of electrons that tells us how many total electrons are in an atom or ion as well as the outermost is called Electronic configuration.

Electronic configuration is the arrangements of electrons in the orbitals of an atoms and this shows the total number of atoms present in the atoms orbits and it shows the different energy levels around an atomic nucleus.

Therefore, An arrangement of electrons that tells us how many total electrons are in an atom or ion as well as the outermost is called Electronic configuration.

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The amount of water that must be added to 6.0 M silver nitrate to make 500mL of 1.2 M solution is : 2000 mL

Given data :

Concentration of siilver nitrate ( M₁ ) = 6.0 M

volume of solution ( V₁ ) = 500 mL

Conc of solution ( M₂ )= 1.2 M

we will apply the equation below

M₁V₁ = M₂V₂ ---- ( 1 )

where : V₂ = V₁ + water added  ---- ( 2 )

V₂ ( Final volume ) = ( M₁V₁ ) / M₂

                              = ( 6 * 500 ) / 1.2

                              = 2500 mL

Back to eqaution ( 2 )

2500 mL = 500 mL + added water

therefore ; added water = 2500 - 500

                                        = 2000 mL

Hence we can conclude that The amount of water that must be added to 6.0 M silver nitrate to make 500mL of 1.2 M solution is : 2000 mL.

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People refuse to answer questions from authorized Stats SA officials because they don't want to reveal confidential information.

An official Stats is an official who has the function of asking citizens for different information in order to establish general statistics for all citizens.

Some people refuse to answer questions out of mistrust, because they don't want to share personal information.

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Answer:

I think A it looks to be the answer

Explanation:

sorry if wrong

I showed maturity when I turn 13 year old

The correct match of the compounds to their characters are:

Ionic compound: made of positive-negative ion and break into pieces easily.

Metallic compound: can be hammered into different shapes and conduct electricity.

Both: are held together with opposite ions, the high boiling point.

Compounds are made up by mixing two or more metals or non-metals.

Different compounds have different chemical properties.

Thus, the Ionic compound: is made of positive-negative ion and break into pieces easily.

Metallic compound: can be hammered into different shapes and conduct electricity.

Both: are held together with opposite ions, the high boiling point.

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Answer:

false

Explanation:

it is a complex mix of hydrocarbons that caan only occur in liquid, gaseous, or solid form. Crude oil is often liquid form. But also includes gas and solid's known as which is found only in certain sands, so false is you're answer.

The sentence best describes the shapes of the moon over the course of about a month is over the course of about a month, the shape of the moon changes from a full circle, to a crescent, and back to a full circle.

The moon when looks like a full circle and having the highest brightness over its life cycle is called the full moon.

The full moon, crescent, half moon or no moon are all the stages of a Moon's lifecycle.

Over a period of 14 days, moon changes from a full moon to no moon. In the another 14 days, no moon changes to full moon. This cycle keeps on going for years and years.

Thus, the sentence best describes the shapes of the moon over the course of about a month is over the course of about a month, the shape of the moon changes from a full circle, to a crescent, and back to a full circle.

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Answer:

Over the course of about a month, the shape of the moon changes from a full circle, to a crescent, and back to a full circle.

Explanation:

[tex]19~ \text{kcal} = 19 \times 1000 ~\text{cal } = 19000~ \text{cal} = 19000 \times 4.184~ \text{J} = 79496~ \text{J}[/tex]

This question involves the concepts of molar mass and molecular formula.

The number of hydrogen atoms in 58.1 grams butane are "10".

The molecular formula of butane is C₄H₁₀. And the molar mass of butane is 58.1 grams. Molar mass id the mass of the single molecule of a compound. Hence, it is very clear from the molecular formula and molar mass of butane that 58.1 grams of butane contains 10 atoms of hydrogen. Mathematically,

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Antioxidants are the substance that prevent oxidation process in a cell, oxidation produce free radical, and free radicals harm the cell. The oxidation number is the count of electrons present in an atom.

Ascorbic acid (vitamin C) is  a water-soluble vitamin that is present in the citrus fruits and vegetables.

Ascorbic acid act as an antioxidant and prevent the production of free radicals in a cell.

Thus, Antioxidants are the substance that prevent oxidation process in a cell, oxidation produce free radical, and free radicals harm the cell. The oxidation number is the count of electrons present in an atom.

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[tex]\tt Kp=Kc(RT)^{\Delta n}[/tex]

NH₄Cl (s) ⇔ NH₃ (g) + HCl (g)

Δn = 2 (gas only)

R = 0.082

T = 427 + 273 = 700 K

4.8 = Kc (0.082 x 700)²

Kc = 1.45 x 10⁻³

Answer:

C.) 2

Explanation:

Chemical equations, in a way, can be seen as algebraic equations. Cl2 is a molecular structure, so, there are two Cl atoms. 3Cl2 means 3, Cl2 molecules. So, if we think of it as adding up all the atoms, we will get, 2 P atoms and 6 Cl atoms. Now to convert. The Law of the Conservation of Mass basically says you can't add or subtract atoms out of nowhere, so the number of atoms has to stay the same when it's being converted. We need to place a coefficient with PCl3. If we look at PCl3, it shows us that there are three Cl atoms and one P atom. And looking back at how many atoms there were on the left side of the equation, we just need to double the atoms of atoms so it will be equal. So, the answer is C.) 2

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Answer:

the answer is C

Explanation:

20.91200832 g of [tex]Ca(OH)_{2}[/tex] must be dissolved in 0.504 L of a solution to make a 0.56 M solution.

What is the molarity of a solution?

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution.

[tex]Molarity = \frac{Mole \;of \;solute}{Volume \;of \;solution \;in \;litre}[/tex]

Given data:

The volume of solution=  0.504 L

Molarity of [tex]Ca(OH)_{2}[/tex] = 0.56 M

Step 1: Calculating the mass of [tex]Ca(OH)_{2}[/tex]

Putting the given values in the equation.

[tex]Molarity = \frac{Mole \;of \;solute}{Volume \;of \;solution \;in \;litre}[/tex]

[tex]0.56 M = \frac{Mole \;of \;solute}{0.504 L }[/tex]

Moles of solute = 0.28224  

[tex]Moles \;of \;solute= \frac{Given \;mass}{Molar \;mass}[/tex]

Molar mass of [tex]Ca(OH)_{2}[/tex] = 74.093 g/mol

Now, put the values in the formula.

[tex]Moles \;of \;solute= \frac{Given \;mass}{Molar \;mass}[/tex]

[tex]0.28224 mol= \frac{Given \;mass}{74.093 g/mol}[/tex]

Mass of [tex]Ca(OH)_{2}[/tex] =20.91200832 g

Hence, 20.91200832 g of [tex]Ca(OH)_{2}[/tex] must be dissolved in 0.504 L of a solution to make a 0.56 M solution.

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Answer:

A harmless nuclear fallout

Explanation:

just did this

Answer:

P value is commonly used. The prevalent use of P values to summarize the results of research articles could result from the increased quantity and complexity of data in recent scientific research.

Explanation: