Apple juice is an example of a solution in nature. What is the solvent in apple juice? A. sugar B. oil C. apples D. water

Answer:

Protons

Explanation:

Electrons have a negative charge which are found in shells around the nucleus. The nucleus consists of protons and neutron and the neutron has a neutral charge.

Answer:

Its B and D :)

Explanation:

I saw the answer key.

Answer:

b refraction

Explanation:

i saw on nasa's website lol

.Answer:

.Marie Kondo

Answer:

Federal Government

Explanation:

:)))))))))

✌❤✌❤

Answer:

where's the document

Explanation:

Answer:

nope

Explanation:

your not my friend yet but you still can friend me

may your day be blessed and happy

Answer:

Unicellular organisms don't live as long and multicellular organisms. ... Disadvantages- Unicellular organisms only have one cell that is used to function their entire being. Short life span, can't grow lager then multicellular organisms.

HERE YA  GO FORTNITE KID

Answer:

3.1 moles of ammonia

18.67× 10²³ molecules

Mass = 52.7 g

Explanation:

Given data:

Number of atoms of hydrogen = 5.68×10²⁴ atoms

A) Number of molecules of ammonia = ?

Solution:

First of all we will calculate the number of moles of hydrogen.

1 mole = 6.022× 10²³ atoms

5.68×10²⁴ atoms × 1 mol / 6.022× 10²³ atoms

0.94×10¹ mol

9.4 moles of hydrogen

Moles of ammonia:

3 moles of hydrogen are present in one mole of ammonia.

9.4 moles of hydrogen = 1/3×9.4 =

3.1 moles of ammonia

Number of molecules of ammonia:

1 mole contain 6.022× 10²³ molecules.

3.1 mol × 6.022× 10²³ molecules / 1 mol

18.67× 10²³ molecules

c) Mass of sample = ?

Mass = number of moles × molar mass

Mass = 3.1 moles × 17 g/mol

Mass = 52.7 g

Answer:

31.3grams

Explanation:

The amount of a radioactive element that remains, N(t), can be calculated by using the formula;

N(t) = N(o) × 0.5^{t/t(1/2)}

Where;

N(t) = mass of substance remaining

N(o) = mass of original substance

t(1/2) = half-life of substance

t = time elapsed

From the provided information; N(t) = ?, N(o) = 250g, t(1/2) = 1599 years, t = 4797 years

N(t) = 250 × 0.5^{4797/1599}

N(t) = 250 × 0.5^(3)

N(t) = 250 × 0.125

N(t) = 31.25g

N(t) = 31.3grams

Answer:

I think it might be:

NiO=2

CuO=4

BaO=2

Explanation:

Hope this helps.

Explanation:

element with atomic numbers 7 and 83 have 5 and 5 valence electrons

Answer:

liquid state is an intermediate phase between solid and gas phase

Answer is A. H20

Answer:

H2O

Explanation:

As H2 is a gas, and the question asks for the liquid state, it'd be H2O.

Answer:

True

Explanation:

All irreversible reactions go to completion because the process cannot proceed in the backward direction.

A reversible reaction is one that does not go into completion in one direction.

An irreversible direction completely uses up the reactants to form the products and goes into completion.

These reactions can only proceed in one direction and not both.

Answer:

weather

Explanation:

Answer:

True, The Answer is true. Mechanical digestion involves physically breaking the food into smaller pieces.

Answer:

true

Explanation:

cause im smart

Answer:

[tex]8.42\ \text{mL}[/tex]

Explanation:

When the endpoint is reached the millimoles of sodium acetate and HCl will be equal.

[tex]\text{Volume of sodium acetate}=25\ \text{mL}[/tex]

[tex]\text{Molarity of sodium acetate}=0.033M[/tex]

[tex]\text{Molarity of HCl}=0.098M[/tex]

[tex]\text{Millimoles of sodium acetate}=25\times 0.033=0.825\ \text{mmol}[/tex]

Let [tex]V=\text{Volume of HCl}[/tex]

[tex]\text{Millimoles of HCl}=0.098V[/tex]

At end point the millimoles will be equal to that of sodium acetate

[tex]0.825=0.098V\\\Rightarrow V=\dfrac{0.825}{0.098}\\\Rightarrow V=8.42\ \text{mL}[/tex]

The volume of HCl required is [tex]8.42\ \text{mL}[/tex].

The volume of HCl required to required to reach endpoint is 8.42 mL

From the question,

We are to determine the volume of HCl required to reach endpoint

First, we will write a balanced chemical equation for the reaction.

The balanced chemical equation for the reaction is

CH₃COONa + HCl → CH₃COOH + NaCl

This means

1 mole of sodium acetate is required to completely neutralize 1 mole of HCl

Now, we will determine the number of moles of sodium acetate present

Using the formula

Number of moles = Concentration × Volume

Concentration of sodium acetate = 0.033 M

Volume of sodium acetate = 25.00 mL = 0.025 L

∴ Number of moles of sodium acetate present = 0.033 × 0.025

Number of moles of sodium acetate present = 0.000825 mole

Now,

Since, 1 mole of sodium acetate is required to completely neutralize 1 mole of HCl

Then,

0.000825 mole of sodium acetate would be required to completely neutralize 0.000825 mole of HCl

∴ The number of moles of HCl needed is 0.000825 mole

Now, for the volume of 0.098 M HCl required to reach endpoint

Using the formula

[tex]Volume = \frac{Number\ of\ moles}{Concentration}[/tex]

∴ Volume of HCl required to required to reach endpoint = [tex]\frac{0.000825}{0.098}[/tex]

Volume of HCl required to required to reach endpoint = 0.008418367 L

Volume of HCl required to required to reach endpoint = 8.418367 mL

Volume of HCl required to required to reach endpoint ≅ 8.42 mL

Hence, the volume of HCl required to required to reach endpoint is 8.42 mL

Learn more here: https://brainly.com/question/9698827

Answer:

beryllium has a higher ionization energy because its radius is smaller. boron has a higher ionization energy because its radius is smaller.

Answer:C - 3.115 g

Explanation:Correct

Answer:

CH4 + 2 O2 → CO2 + 2 H2O

Explanation:

There are one mole of O2 on the left side and on the right side there are three moles of O2. And to fix it you would need to make it two moles of O2 to have four molecules of O2 on the left side. Then you would make two moles of H2O to have a total of four moles of O2 on the right. Therefore, CH4 + 2 O2 → CO2 + 2 H2O is the answer.

Answer:

1,2,1,2

Explanation:

hope this helped!

Answer:

In the electrolysis of dilute sulfuric acid, which electrolysis in aqueous solution to form hydrogen ions, H⁺, and sulfur IV ions SO₄²⁻ in the presence of H⁺ and OH⁻ ions from the water molecules

At the anode

The anode, positive electrode, attracts the negative OH⁻ and SO₄²⁻ ions where the OH⁻ gives up electrons to form water molecules and oxygen as follows;

4OH⁻ → 2H₂O + O₂ + 4e⁻

At the cathode

The positive H⁺ ions from the water molecules and the acid are attracted to the cathode where they combine with 2 electrons to form hydrogen gas as follows;

2e⁻ + 2H⁺ → H₂ (gas)

Explanation:

Answer:

The correct answer is 1) 257 and 2) 135

Explanation:

Answer:

684

Explanation:

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 684 g of lead would be required to make 119 grams of water.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

The balanced equation for the given reaction can be written as below

Pb + PbO[tex]_2[/tex] + 2H[tex]_2[/tex]SO[tex]_4[/tex] [tex]\rightarrow[/tex]2PbSO[tex]_4[/tex] + 2H[tex]_2[/tex]O

Mathematically,

The mole ratio between lead and water is 1:2

(119 g H2O) / (18.01532 g H2O/mol) x (1 mol Pb / 2 mol H2O) x (207.21 g Pb/mol) = 684 g Pb

The mass of lead comes out to be  684 g.

Therefore, 684 g of lead would be required to make 119 grams of water.

To know more about mole, here:

https://brainly.com/question/15209553

#SPJ2

Answer:

If the pH of a solution is less than 7, the solution is called acidic; if the pH is about 7, the solution is neutral; if the pH is greater than 7, the solution is is called basic. In an acidic solution, then, the concentration of hydrogen ions is greater than the concentration of hydroxide ions.

Explanation:

Not sure about the context of the question, but you can check with a ph scale tester.

Answer:

B. Sodium

Explanation:

The composition of sea water, smoke, and soft drinks are not consistent, and you can separate the parts that make up each. Sodium has a definite and consistent composition, so it is a pure substance.

Answer:

a

Explanation:

it's the most common thought of element when you need a compound from earth