Match the below mention gas law.

____________ states that the volume of a gas is directly proportional to the temperature of the gas, while pressure and number Of moles are kept constant (V/T = constant). All temperatures must be in kelvins when used in gas law calculations.
__________ states that the volume of the gas varies inversely to the pressure on the gas, while temperature and number of moles are kept constant (PV = constant).
____________ states that the volume of a gas is directly proportional to the number of moles of the gas, while pressure and temperature are kept constant (V/n constant).

1. Boyle's law
2. Charles's law
3. Avogadro's law

Answer:

C it requires a specific glycoprotein for its absorption.

Out of the following statements concerning vitamin B12 the only statement which is correct- it requires a specific glycoprotein for its absorption.

Let's study some facts about vitamin B12:

⇒First, hydrochloric acid in the stomach separates vitamin B12 from the protein that it's attached to.

⇒Second, the freed vitamin B12 then combines with a protein made by the stomach, called intrinsic factor, and the body absorbs them together.

⇒intrinsic factor, transcobalamin (also known as transcobalamin II), and haptocorrin (also known as the R-protein or transcobalamin I).

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Answer:

A form of energy that can be used by cells.

Explanation:

Explanation:

Earth is known as the "Blue Planet" because 71 percent of the Earth's surface is covered with water. Water also exists below land surface and as water vapor in the air. Water is a finite source. The bottled water that is consumed today might possibly be the same water that once trickled down the back of a wooly mammoth. The Earth is a closed system, meaning that very little matter, including water, ever leaves or enters the atmosphere; the water that was here billions of years ago is still here now. But, the Earth cleans and replenishes the water supply through the hydrologic cycle.

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Answer:

CuCo3+CaSo4

Explanation:

when they react they form that compound in the reaction called double displacement.

Answer:

Hence, option B is correct. 1 and 2

Explanation:

NH 4 Cl is a weak base-strong acid salt.

NaCN is a salt of a strong base (NaOH) and weak acid (HCN).In water,

1. NH 4 Cl produces acidic solution

2. KHSO 4 produces acidic solution

because the neutral salt of strong base KOH and strong acid H 2 SO 4 is K 2 SO 4

3. NaCN produces basic solution

4. KNO

3 produces neutral solution

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Answer:

H+

Explanation:

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Answer:

C

Explanation:

KE at B is max and PE is 0

KE at C is 0 and PE is max

so when student swings from C to B

its KE increases

and PE decreases

Answer:

MgO

Explanation:

Hydrogen sulfide ions, dihydrogen phosphate, and water are amphoteric. Therefore, option (a), (c), and (d) are correct.

Amphoteric can be stated as any compound that can be mixed with other compounds both as a base and an acid. Water is amphoteric as it can be transformed into a compound that can be mixed as an alkali or an acid.  

Amphoterism is explaining the reactivity of a compound that indicates alkaline nature when mixed with an acid and describes acidic characteristics in an alkaline environment.

When acid reacts with water, it forms H₃O⁺ ion adding an H⁺ ion from the acid. When water is combined with a base, it donates a hydrogen H⁺ ion to the base and releases a hydroxide ion.

Besides water, there are many oxides and hydroxides are utilized in amphoterism. The substances that have both characteristics acids are proton donors and bases are proton acceptors are identified as amphoteric substances.

Therefore, HS⁻, H₂O, and H₂PO₄⁻ are amphoteric in nature.

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Answer: 2,25 mol

Explanation: 2Al + 3CuSO4 → Al2(SO4)3 + 3Cu

                    1,5 mol                                                       (1,5*3)/2 mol = 2,25 mol

Answer:

Exothermic

1771 g

Explanation:

Step 1: Write the balanced thermochemical equation

2 S(s) + 3 O₂(g) ⇒ 2 SO₃(g)   ΔH° = -791.4 kJ

Since ΔH° < 0, the reaction is exothermic.

Step 2: Calculate the moles of SO₃ produced when 8753 kJ of energy are released

According to the thermochemical equation, -791.4 kJ are released every 2 moles of SO₃ that are formed.

-8753 kJ × 2 mol/(-791.4 kJ) = 22.12 mol

Step 3: Calculate the mass corresponding to 22.12 moles of SO₃

The molar mass of SO₃ is 80.06 g/mol.

22.12 mol × 80.06 g/mol = 1771 g

Answer:

It is a colourless, odourless, tasteless gas that is the most plentiful element in Earth's atmosphere and is a constituent of all living matter.

Explanation:

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Answer:

Nitrogen is a gas

Explanation:

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Answer:

482

Explanation:

Answer:

This bubbled-up magma is cooled by frigid seawater to form igneous rock. This rock (basalt) becomes a new part of Earth's crust. Seafloor spreading occurs along mid-ocean ridges—large mountain ranges rising from the ocean floor.

Explanation:

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Answer:

both groups and periods

Answer:

groups

Explanation:

Elements in the same group have similar chemical properties because they have the same number of outer electrons and the same valency

Answer:

A range of organic molecules can undergo combustion. Pyridine (C5H5 combustion in the unbalanced reaction shown below wtar o 4 CsH5N + O2 +H2O + CO2 + NO a) Write the balanced equation. (2 points) # 41 CH N +170 70 the flow, t- b) Find the percent yield for the reaction if 10.0 g of pyridine dioxide. (2 points)

Explanation:

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Answer:

b) empty space

Explanation:

A mechanical cannot travel through empty space. So option (b) is correct.

A mechanical wave is a wave which needs a material medium for its propagation. For example sound, water waves etc . The medium required by the wave can be a solid, liquid or a gas. Empty space doesn't have any medium, so a mechanical wave cannot travel through empty space.

Answer:

7 L of H₂.

Explanation:

The balanced equation for the reaction is given below:

2H₂ + O₂ —> 2H₂O

From the balanced equation above,

1 L of O₂ required 2 L of H₂.

Finally, we shall determine the volume of H₂ required to react with 3.5 L of O₂. This can be obtained as follow:

From the balanced equation above,

1 L of O₂ required 2 L of H₂.

Therefore, 3.5 L of O₂ will require

= 3.5 × 2 = 7 L of H₂.

Thus, 7 L of H₂ is required to for the reaction.

Answer:

C) Both

Explanation:

Whenever we mix any pure form of a compound with some other form of a compound which is not in the other standard pure state, this results in the melting point of mixture to get dispersed and it becomes broad form.

Thus, when a known compound of 3-Nitroaniline mixes with both 3-Nitroaniline and 4-Nitrophenol, the melting point of the compound becomes depressed and board.

Thus the correct option is (C).

Answer:

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Explanation:

the answer is in the above image

Answer:

the mass of salt

Explanation:

In an experiment, we have an independent variable and dependent variable. The independent variable is the variable that is manipulated to cause changes in other variable while the dependent variable is the variable that responds to the changes made to the independent variable and is measured.

In this case of experiment, the mass of the salt is the DEPENDENT VARIABLE while the different temperatures is the INDEPENDENT VARIABLE. In a graphical representation, the independent variable is always plotted on the x-axis or horizontal axis while the dependent variable is always plotted on the y-axis or vertical axis.

Since the dependent variable is the mass of the salt, it should be plotted on the y axis.

Answer:

The temperature of water

Explanation:

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Answer:

the TWO characteristics of an effective collision are:

1.Molecules collide with sufficient energy

2.Molecules collide with the proper orientation.

Answer:

See explanation

Explanation:

For the first question, we can see that the pressure is constant so we apply Charles law;

V1/T1 =V2/T2

V1T2 = V2T1

V1= 4.5 L

T1= 27 + 273 = 300 K

V2= ?

T2= 127 + 273 = 400 K

V2= V1T2/T1

V2= 4.5 × 400/300

V2= 6L

For question 2, Charles law is also used;

V1/T1 =V2/T2

V1T2 = V2T1

T1= 338 K

V1= 0.480 L

T2= ?

V2= 9.2 L

T2= V2T1/V1

T2= 9.2 × 338/0.480

T2= 6478.3 K

Answer:

100 mL

Explanation:

The reaction that takes place is:

First we convert 500 mg of CaCO₃ into mmoles, using its molar mass:

Then we convert 5 mmoles of CaCO₃ into HCl mmoles, using the stoichiometric coefficients of the balanced reaction:

Finally we calculate the volume of a 0.10 M HCl solution (such as stomach acid) that would contain 10 mmoles:

Answer:

The netto reaction equation is:

2 OH- + 2H+ = 2 H2O  

So the answer is 2 moles.

Answer:

a. The longest chain is chosen incorrectly.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to firstly draw the structural formula of the 1,3-Dimethylbutane:

[tex]CH_3-CH_2-CH(CH3)-CH_2-CH_3[/tex]

Thus, we can see that the correct name should be 3-methylpentane since the longest chain was chosen incorrectly, as it must have five carbon atoms.

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