Acid and bases virtual lab

Answer:

it is a infectiousr bacterial disease characterized by the growth of nodules(tubercles) in tissues especially the lungs

Answer:

Yall are coming after that person above me when theres no diagram!!!! HELLO????????????? crazy

Explanation:

Answer:

volume=100

density=100

Explanation:

to get volume you multiply length and width to get area then multiply height=100

to get density you divide mass by volume

Answer:

3 molecules

Explanation: i got it right on the test, also because the 2 other ones are compounds because they have hyrdogen and oxygen attached and molecules just have particles of one element attached

Answer:

3 molecules

Explanation:

Answer:

It is visible light

Explanation:

Answer:

Explanation:

One

Pressure will favor the side with the least number of mols if it the larger number of moles counts only the gases. (Le Chetalier's Principle). In this case both CaCO3 and CaO are not soluble in water. The only gas is CO2. Since it represents the most number of mols the reactant is favored.

More or Less are very troublesome words in beginning science. Make sure you understand their meaning for this question. The more pressure applied, the more the reactants will be favored and the equation shifts left.

Two

Fe and Fe3O4 are both solids. It depends on the form that water takes. Looking it up, it is shown to be in a gas form. That means if you increase the pressure, nothing will happen. That is not your question, but you should note it.

The answer to your question is you increase the concentration of Fe or H2O, the equilibrium will shift right.

If you add more Fe3O4 or hydrogen it will shift left.

Chemists say that if you alter the equilibrium the equation will shift in the opposite direction to compensate for the action you have taken.

Answer:

Reactions occur when two or more molecules interact and the molecules change. ... Bonds between atoms are broken and created to form new molecules. That's it.

Explanation:

Answer:

polyethylene terephthalate

PET (also abbreviated PETE) is short for polyethylene terephthalate, the chemical name for polyester. PET is a clear, strong, and lightweight plastic that is widely used for packaging foods and beverages, especially convenience-sized soft drinks, juices, and water.

Explanation:

hope this helps have a good rest of your afternoon :) ❤

3. an exothermic reaction

Answer:

4 × 10 g

Explanation:

Step 1: Write the balanced equation

2 H₂(g) + O₂(g) ⇒ 2 H₂O(I)

Step 2: Calculate the moles corresponding to 4 g of H₂

The molar mass of H₂ is 2.02 g/mol.

4 g × 1 mol/2.02 g = 2 mol

Step 3: Calculate the moles of H₂O produced from 2 moles of H₂

The molar ratio of H₂ to H₂O is 2:2. The moles of H₂O produced are 2/2 × 2 mol = 2 mol.

Step 4: Calculate the mass corresponding to 2 moles of H₂O

The molar mass of H₂O is 18.02 g/mol.

2 mol × 18.02 g/mol = 4 × 10 g

Answer:

16% v/v es la nueva concentración de alcohol en la solución

Explanation:

El porcentaje volumen/volumen (% v/v) es definido como 100 veces la relación entre el volumen de soluto (Alcohol en este caso) y el volumen total de la solución (Agua + Alcohol). Para resolver esta pregunta necesitamos hallar el volumen de alcohol y el de agua:

Volumen alcohol:

320cc * (20cc etanol / 100cc) = 64cc etanol

Volumen agua:

80cc + (320cc-64cc) = 336cc agua

% v/v:

64cc / (336cc + 64cc) * 100

= 16% v/v es la nueva concentración de alcohol en la solución

Answer:

either deposition or physical weathering

Answer:

D. Erosion

Explanation:

Answer:

C  Which model is composed of electrically charged particles?

Explanation:

The best question to resolve and determine the model which is plasma is to find one that is composed of electrically charged particles.

Plasma is one of the states of matter which is characterized by ions and other charged particles.

Matter is anything that has weight and occupies space.

There are four known states of matter which are:

Plasma is the only state of matter made up of charged particles.

Answer:

2HgO    →     2Hg      +  O₂

The reaction is a decomposition reaction because from one reactant two products were obtained

Explanation:

The problem here involves balancing the chemical reaction given and also classifying the reaction.

 The unbalanced expression is given as:

              HgO    →     Hg      +  O₂

Assign the alphabets a,b and c as coefficients that will balance the equation

           aHgO    →     bHg      +  cO₂

Conserving Hg: a  = b

                   O:    a  = 2c

So, let c  = 1, a  = 2 b  = 2

Therefore;

       2HgO    →     2Hg      +  O₂

The reaction is a decomposition reaction because from one reactant two products were obtained

Answer:

0.252 moles

Explanation:

Since 14.1 g of iron is produced and the molar mass of iron is 55.85 g, the number of moles of iron produced is gotten from

n = m/M where m = mass of iron produced = 14.1 g and M = molar mass of iron = 55.85 g/mol

So, n = m/M

n = 14.1 g/55.85 g/mol

n = 0.252 moles of Fe.

So, the theoretical amount of Fe moles produce in the reaction is 0.252 mol

Answer:

1kg/ml

Explanation:

Answer:

67.58%  

Explanation:

First we convert the masses of the reactants into moles, using their respective molar masses:

By looking at the reaction equation, we know that 1.32 moles of Cl₂ would react completely with (2 * 1.32) 2.64 moles of Na. There are not as many Na moles, so Na is the limiting reactant.

Now we calculate how many NaCl moles would have been produced if all the limiting reactant was consumed:

We convert those moles to grams:

Finally we calculate the percent yield:

Answer:

As the salinity of seawater increases, the density of the water also increases.

Explanation:

Edmentum answer

Answer:

The salinity of seawater increases, the density of the water also increases.

Explanation:

Answer:

the elk population will increase

Explanation:

because the gray wolves eat the Elks so introducing them back into the food chain will mean that more Elks are eaten!

hope that helps

Salts that are from strong bases and strong acids do not hydrolyze. Salts that are from strong bases and weak acids do hydrolyze, which gives it a pH greater than 7.  Salts of weak bases and strong acids do hydrolyze, which gives it a pH less than 7.

Answer:

C. Yes, if each sample contains 6.02 x 10²³ atoms.

Explanation:

It is possible for each sample to contain 1 mole of each sample if and only if each of the sample if made up of 6.02 x 10²³ atoms.

6.02 x 10²³ atoms is the Avogadro's number. This number is equivalent to a mole of a substance.

A mole is simply a unit of measurement and it is equivalent to 6.02 x 10²³ atoms.

Answer:

C

Explanation:

i just took the test

:)

Explanation:

Use the molecular formula to find the molar mass; to obtain the number of moles, divide the mass of compound by the molar mass of the compound expressed in grams.

Answer:

Nothing

Explanation:

Thermal energy and heat are mainly related because of the fact that the faster molecules move, the more heat is created. If molecules are vibrating slower, that means that there will be less energy, resulting in less heat. Say I am boiling water. As the temperature increases, the water molecules move faster. Once that water cools, the molecules will be moving really slowly. In conclusion, thermal energy and heat are related because of how fast or slow the molecules move, the more or less heat and energy will be produced. I hoped this helped!

Answer:

C. Balanced forces caused a change in the motion of the plates.

Explanation:

Scientists believe that Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle. This movement in the mantle causes the plates to move slowly across the surface of the Earth.

Answer:

Chloride , hypochlorite, chlorite , chlorate, perchlorate

Chloride ion Cl-

Perchlorate ClO4-

Chlorate ClO3-

Chlorite ClO2-

Hypochlorite ClO-

Explanation:

Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. Therefore, the order is 2, 4,3, 5, 1.

Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.

Cation is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state.

The ion with the fewest oxygen atoms to the ion with the most oxygen atoms are:

Perchlorate ClO[tex]_4[/tex]⁻

Chlorate ClO[tex]_3[/tex]⁻

Chlorite ClO[tex]_2[/tex]⁻

Hypochlorite ClO⁻

Chloride ion Cl⁻

Therefore, the order is 2, 4,3, 5, 1.

To learn more about ions, here:

https://brainly.com/question/13692734

#SPJ2

Answer:

True

Explanation:

Answer: true

Explanation:

Answer:

I think its A or D

Explanation:

A) high melting point

C) soluble in water

D) soluble in alcohol

E) does not conduct electricity in water

these options are a bit vague as some covalent substances dissolve in water / alcohol while some don't