CHEMISTRY HIGH SCHOOL

The temperature at the point of intercept of the plotted data with the Temperature axis is:600°C
-273°C
-160°C
50°C
The temperature at the point of intercept of the plotted - 1

Answers

Answer 1
Answer:

Answer: The temperature at the point of intercept is -273°C.

Explanation: Intercept is a point on a graph which crosses the x and y axes.

Here, The X-axis represents Temperature in °C and Y-axis represents the Volume in mL.

On X-axis, the major division is 100 and minor division is 10. The slope intercepts the X-axis at third minor division from the origin. Hence, the temperature of intercept corresponds to -273°C.
Answer 2
Answer: An axis is a line of numbers in a graph. The intercept is where a line of data and axis intersect, which if you look at the purple line and the temp. axis, is around -273 C.

Related Questions

A student is using a copper strip and a strong chlorine solution in her experiment. Which of these is a chemical property of one of her materials?
One way to remove nitrogen oxide from smokestack emissions is to react it with ammonia: 4 NH3 (g) + 6 NO (g) ----------> 5 N2 (g) + 6H2O (I)Fill in the blanks below:12.3 mol of NO reacts with ______ mol of ammonia5.87 mol of NO yields _______ mol nitrogen
The amount by which a machine multiplies an effort force is called ____.a. efficiency factor b. fulcrum c. mechanical advantage d. resistance force
Which sequence represents the relationship between pressure and volume of an ideal gas as explained by the kinetic-molecular theory?
Which statement best describes John Dalton’s use of creativity in his work?He reinterpreted and retested Joseph Proust’s results. He used a scientific method to conduct his experiment. He wrote his results down as four parts of the atomic theory. He verified Democritus’s idea that matter was composed of atoms.

a teacher describes a mathematical system that can be used to convert the weight of water to the mass of water

Answers

To describe a mathematical system that converts weight of water to mass equivalent, the teacher must use the idea of acceleration of gravity. Mass is the amount of matter composed in a substance. Weight is affected by the pull of gravity. Weight is mass multiplied by acceleration of gravity. Gravity acceleration is equal to 9.81 m/s2. So to convert weight to mass, divide the weight by 9.81 m/s2 simply.

A polar commercial antacid contains both Al(OH)3 and Mg(OH)2. Are these compounds Arrhenius bases, Brønsted-Lowry based, or both? Explain your answer.

Answers

Answer:

Magnesium hydroxide, Mg(OH)2, is an Arrhenius base and therefore also a Brønsted-Lowry base.

However, water can also act as a base by accepting a proton from an acid to become its conjugate base, H3O+. where Al(OH)3 is acting as a Lewis Base.

Explanation:

Arrhenius acids and bases

An Arrhenius acid is any species that increases the concentration of H+start text, H, end text, start superscript, plus, end superscript in aqueous solution.

An Arrhenius base is any species that increases the concentration of OH−start text, O, H, end text, start superscript, minus, end superscript in aqueous solution.

The valence of aluminum is +3, and the valence of chlorine is –1. The formula for aluminum chloride iscorrectly written as
A. ClAl3.
B. Cl3Al.
C. AlCl3.
D. Al3Cl.

Answers

The correct option is C.i.e. AlCl3Given:The valence of aluminum is +3, and the valence of chlorine is –1. Thus, 3 chlorine atoms each of (-1 charge )combine to make the charge balance because of Al (3+). Thus, 1 atom of Aluminum (Al) binds with three atoms of Chlorine (Cl).Thus, the net foromula becomes AlCl3

AICI3

which is choice c.


Aluminium chloride

Chemical compound

DescriptionAluminium chloride is the main compound of aluminium and chlorine. It is white, but samples are often contaminated with iron(III) chloride, giving it a yellow color. The solid has a low melting and boiling point. Wikipedia

IUPAC ID: aluminium chloride

Molar mass: 133.34 g/mol

Soluble in: Water

Related Lewis acids: Iron(III) chloride; Boron trifluoride

Heat capacity (C): 91.1 J/mol·K

Other names: aluminium(III) chloride; aluminum trichloride

A particle with 12 electrons has a -2 charge. How many protons does it have.

Answers

Well, it has 10 protons.

For, a atom in its neutral state has the same number of protons as electrons. Thatswhy, it has a neutral charge. The protons have a positive charge (1+); the elctrons have a negative charge(1-). So, the charges cancel out. Like, a atom has 11 electrons and 11 protons. See-

11 e- = -11
11 p+ = +11

Then, +11-11 = 0. So, no charge. Its neutral. It happens in case of every atom.

And, if an atom has (2-) charge that means it has two extra electrons. Two more electron than the number of protons. It once had the same number of protons and electrons. Then two more electrons give it a (2-) charge. Thatswhy, if we subtract 2 from 12, we can get the number of protons.

We can calculate the number of protons as,  12-2=10

Okay, what's the proof? Want it?

We know there are 10 protons and 12 electrons. Let's see it.

+10-12=-2

Eureka! That's it. I got it. It's right.

AND ANOTHER QUESTION ARISES, If all atoms have the same number of protons and electrons then, when does the number of electron decrease or increase? How do the atoms come to have positive or negative charge?

Well, this happens because of ionic bonding. I can't explain all these stuff, right here. To obtain more information on bonding, search it on GOOGLE.

Which formula represents an ionic compound?
(1) H2 (3) CH3OH
(2) CH4 (4) NH4Cl

Answers

Answer is: (4) NH4Cl.

Name of this chemical copmpound is ammonium chloride.

Ammonium chloride (NH₄Cl) is chemical compound with neutral charge.

1) Hydrogen (H) has oxidation number +1 in compounds with nonmetals (nitrogen and chlorine).

2) Chlorine has oxidation number -1, because ammonium ion (NH₄⁺) has positive charge.

3) In ammonium cation (NH₄⁺), nitrogen has higher electronegativity than hydrogen, so it has negative oxidation number -3:

x + 4 · (+1) = +1.

x = 1 - 4.

x = -3; oxidation number of nitrogen.

Electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

Other molecules have covalent chemical bonds.

An ionic compound is formed when there is a transfer of electrons between two atoms. The formula for an ionic compound is usually written as the combination of the symbols of the two ions. (4) NH4Cl represents an ionic compound as it follows the criteria of an atom losing or gaining electrons.

An ionic compound is formed when there is a transfer of electrons between two atoms. In an ionic compound, one atom will lose electrons to become a positively charged ion, while the other atom will gain those electrons to become a negatively charged ion. The formula for an ionic compound is usually written as the combination of the symbols of the two ions.

Out of the given options, (4) NH4Cl represents an ionic compound. In this formula, the ammonium ion (NH4+) loses one electron to become positively charged, and the chloride ion (Cl-) gains that electron to become negatively charged.

Learn more about Ionic compounds here:

brainly.com/question/33500527

#SPJ6

ure carbon tetrachloride, CCl4, freezes at-23.00 ⁰C and has a kf of 29.8⁰C/m. The latest lot has a freezing point of-23.43⁰C. What is the molality of impurities in thesolvent? If the impurity is largely hexachloroethane, C2Cl6, how many grams of this impurity arethere per kg of CCl4?Once the mass of the impurity is determined, calculate the mass % purity:

Answers

Answer:

a) grams of this impurity per kg of CCl4 = 3.416 g/kg of solvent.

b) mass purity % = 99.66%

Explanation:

Given, the freezing point of pure CCl₄ = - 23°C

Presence of impurities lowers the freezing point to - 23.43°C

The freezing point depression constant, Kբ = 29.8°C/m

The lowered freezing point is related to all the parameters through the relation

ΔT = i Kբ × m

where ΔT is the lowered freezing point, that is, the difference between freezing point of pure substance (T⁰) and freezing point of substance with impurities (T).

i = Van't Hoff factor which measures how much the impurities influence/affect colligative properties (such as freezing point depression) and for most non-electrolytes like this one, it is = 1

Kբ = The freezing point depression constant = 29.8°C/m

m = Molality = ?

T⁰ - T = i Kբ m

- 23 - (-23.43) = 1 × 29.8 × m

m = 0.43/29.8 = 0.0144 mol/kg

Them we're told to calculate impurity of the CCl₄

we convert the Molality to (gram of solute)/(kg of solvent) first

Solute = C₂Cl₆

Molar mass = 236.74 g/mol

So, (molality × molar mass) = (gram of solute)/(kg of solvent)

(gram of solute)/(kg of solvent) = 0.0144 × 236.74 = 3.416 (gram of solute)/(kg of solvent)

Mass purity % = (1000 g of pure substance)/(1000 g of pure substance + mass of impurity in 1000 g of pure substance)

1000 g of solvent contains 3.416 grams of impurities

Mass purity % =100% × 1000/(1003.416)

Mass purity % = 99.66 %
Other Questions
Lenses can be found in a variety of objects. Which example does not contain a lens?A. a magnifying glass B. a telescope C. chemical safety goggles D. a microscope
For every Pb+2 ion that is formed, how many Cl- ions are formed? (Refer to the reaction in the lesson above.) answer choices 1 3 2 4
Select all that apply.Hydraulic systems work because _____. liquids are incompressible pressure is transmitted equally throughout a liquid gases are incompressible pressure and force are the same thing
What balances charges that may build up as reduction and oxidation occur in a voltaic cell?a. the salt bridge c. the electrolyte solutions b. one of the half-cells d. the moving electrons