An independent variable is....
A: What we measure
B: What we change
C: What stays the same
D: What we conclude

Answer:

Gram

Centi-

Centimeter

Kilogram

Decimeter

Liter

Decimal System

Kilo-

Kilometer

Area

Answer: The rabbit population reached carrying capacity during the fourth year of the 10 years we set. Introduction: Population densityis the number of individuals in a population per unit of area. Some limiting factors only affect a population when its density reaches a certain level.

Explanation:

Answer:

D. formation of zinc from zinc sulphide ​

Explanation:

A redox reaction could be explained as an artificial reaction in which electrons are moved between two reactants partaking in it. This substitution of electrons can be recognized by examining the variations in the oxidation states of the reacting classes. The generation of hydrogen fluoride is an illustration of a redox reaction. We can crack the reaction down to investigate the oxidation and loss of reactants.

The percent yield of indigo : 79.6%

Percent yield is the comparison of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

Reaction

2C₁₀H₁₁NO₄ + 2H₂O → C₁₆H₁₀N₂O₂ + 2C₂H₄O₂ + 4H₂O

Actual yield = 1.87 g

Theoretical yield = 2.35 g

The percent yield of indigo :

[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\\%yield=\dfrac{1.87}{2.35}\times 100\%=\boxed{\bold{79.6\%}}[/tex]

Answer:

Atomic Number

Neutral atoms of an element contain an equal number of protons and electrons. The number of protons determines an element's atomic number (Z) and distinguishes one element from another.

Explanation:

Answer:

d = 2.5 g/L

Explanation:

Given data:

Molar mass of gas = 56 g/mol

Density of gas = ?

Temperature = 273.15 K

Pressure = 1 atm

Solution:

Formula:

d = PM/RT

d = 1 atm × 56 g/mol / 0.0821 atm.L/mol.K ×273.15 K

d = 56 atm  g/mol./ 22.42 atm.L/mol

d = 2.5 g/L

Answer:

A: ozone

Explanation:

Answer:

A: ozone

Explanation:

right on EDGE 2021

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{374}{2.2 \times {10}^{3} } = \frac{17}{100} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

it would be 5,045

Explanation:

because it is closer to 5,000. pls correct me if wrong

Answer:

paper plate

Explanation:

A renuable source is a source that would replenish in ones lifetime. Trees make paper and grow in the span of a average human life.

Answer:

El Niño refers to the above-average sea-surface temperatures that periodically develop across the east-central equatorial Pacific. It represents the warm phase of the ENSO cycle. La Niña refers to the periodic cooling of sea-surface temperatures across the east-central equatorial Pacific.

Answer:

Name ; Nickel(ii)Hydroxide

Formula;NI3O6

Explanation:

Answer:

because yes

Explanation:

Answer:

When heated, glass can become a sort of liquid I guess :>

Explanation:

Answer: I would choose ice

Ice is the solid state of water, a normally liquid substance that freezes to the slid state at temperatures of 0 °C (32 °F) or lower and expands to the gaseous state at temperatures of 100 °C (212 °F) or higer

Answer:

fire

Explanation:

just my opinion but.

If you have fire you could melt things and it defeats ice and ice is easily melted.

Fire is good in a "battle" too lol.

Answer:

I think it's A because effusion is a gas escaping from a tiny hole

Explanation:

I just finished the test and got it right :)

Answer:

A on edge 2020

Explanation:

I took the test and got 100, hope this helps:)

Answer:

132g/mol

Explanation:

Given compound:

   C₆H₁₂O₆

Molecular mass of the compound.

 This is the sum of the atomic masses of the given elements in the compound;

  C = 12

  H  = 12

  O = 6

Molecular mass = 6(12) + 12(1) + 6(16) = 180g/mol

Answer:

a: chemical change because the change cannot be reversed.

b: physical change because the action can be reversed.

c: chemical change.

d:chemical change.

any change that cannot be reversed is a chemical change and any change that can be reversed is a physical change.

Answer:

the answer is

Explanation:

6CO2 + 6H2O — > C6H12O6 + 6O2.

Answer: 6CO2 + 6H2O ---> C6H12O6 +6O2

sunlight

Couldn't do subscripts on my phone, but you probably know to put the 2s like that anyway, glad to help.

Explanation: The amount of matter that you start with you end with so you will have 6 carbon dioxide molecules and 6 water molecules and end up with the same amount of matter in your products, according to the law of conservation of matter.

Answer:

They must be dissolving.

Explanation:

Acid molecules must cling to remaining food molecules and slowly dissolve them.

Answer:

c the particles are spaced out and move freely

Explanation:

Answer:

C). The particles move freely and are well separated

Explanation:

Answer:

to be procice, it must use small units to take mesurements

Explanation:

a.pex

Answer:

C is the correct answer :)

Explanation:

In a balanced chemical equation, the amount of matter on the left-hand side of the chemical equation is the same as the amount of matter on the right-hand side. Therefore, option C is correct.

A balanced equation in which the number of atoms of each element is equal on the reactant, as well as the product side of the chemical equation.

The law of conservation of matter follows every balanced chemical equation. According to the law of conservation of matter, in a chemical reaction, matter can never be created or destroyed.

By obeying this law, the total amount of matter on the reactant side should be equal to the total amount of matter on the product side in a balanced chemical equation.

Given the reaction between acetic acid and sodium bicarbonate:

[tex]CH_3COOH + NaHCO_3\longrightarrow CH_3COONa +H_2O + CO_2[/tex]

The number of atoms of carbon, hydrogen, oxygen, and Na are equal on both sides of the reaction.

Learn more about the balanced chemical equation, here:

brainly.com/question/28294176

#SPJ2

Explanation:

Phases of Matter

Question Answer

Vaporization that occurs at and below the surface of a liquid boiling

A solid that is made up of crystals in which particles are arranged in a regular, repeating pattern crystalline solid

A solid made up of particles that are not arranged in a regular pattern amorphous solid

Answer:

Radioactive elements

Stable

Explanation:

Radioactive elements that have a longer half-life are more stable than those that a shorter half-life.

Half-life is the time taken for half of a radioactive element to decay by half of its original composition.

Now, if a substance have a long half-life, it is more stable and takes time to break down. For atoms with a short life, they are highly unstable and breaks down readily and easily.

Answer:

1.181 × 10²⁴ molecules CO₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

86.34 g CO₂

Step 2: Identify Conversion

Avogadro's Number

Molar Mass of C - 12.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of CO₂ - 12.01 + 2(16.00) = 44.01 g/mol

Step 3: Convert

[tex]86.34 \ g \ CO_2(\frac{1 \ mol \ CO_2}{44.01 \ g \ CO_2} )(\frac{6.022 \cdot 10^{23} \ molecules \ CO_2}{1 \ mol \ CO_2} )[/tex] = 1.18141 × 10²⁴ molecules CO₂

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

1.18141 × 10²⁴ molecules CO₂ ≈ 1.181 × 10²⁴ molecules CO₂