JURCES OF
ATION from our class! Make sure to give
definition & explain your answer for each question part. Today's CRQ
Look at the diagram below. What type of bonding (ionic or covalent) does it
represent? Explain your choice by giving the definition of that type of bond. Give
description of that type of bonding by explaining how & why Hydrogen & Chlorine
bond.
H+CI:-HCI :
-
H:CI:
(For Bonus points-if this was Carbon & Fluorine what would be newly formed Compound's
correct name or Chemical Formula)

Answer:

I think B but I'm not sure.

Answer: Amplitude of the light wave impacts brightness; the wavelength is what impacts/is associated with color.

Answer:

[tex]\boxed {\boxed {\sf 39.13 \ Liters}}[/tex]

Explanation:

We want to find the new volume given the temperature, so we use Charles's Law. This states the volume of a gas is directly proportional to the temperature. The formula is:

[tex]\frac {V_1}{T_1}=\frac{V_2}{T_2}[/tex]

We know the original volume is 20.0 liters and the temperature is 23.0 degrees Celsius. The temperature changes to 45.0 degrees Celsius, but we don't know the new volume. Substitute the known values into the formula.

[tex]\frac {20.0 \ L}{23.0 \textdegree C}=\frac{ V_2}{45.0 \textdegree C}[/tex]

We are solving the new volume, so we need to isolate the variable V₂. It is being divided by 45.0 degrees Celsius. The inverse of division is multiplication, so we multiply both sides by 45.0 °C.

[tex]45 \textdegree C *\frac {20.0 \ L}{23.0 \textdegree C}=\frac{ V_2}{45.0 \textdegree C}* 45 \textdegree C[/tex]

[tex]45 \textdegree C *\frac {20.0 \ L}{23.0 \textdegree C} = V_2[/tex]

The units of degrees Celsius cancel.

[tex]45 *\frac {20.0 \ L}{23.0}= V_2[/tex]

[tex]39.1304348 \ L=V_2[/tex]

If we round to the nearest hundredth, the 0 in the thousandth place tells us to leave the 3.

[tex]39.13 \ L \approx V_2[/tex]

The new volume of the balloon is approximately 39.13 Liters.

Answer:

The volume of the solution is 0.305 liters.

Explanation:

Molar mass is the amount of mass that a substance contains in one mole. The molar mass of K₂Cr₂O₇ is 294 g / mole. Then you can apply the following rule of three: if by definition of molar mass 294 grams of the compound are contained in 1 mole, 180 grams are contained in how many moles?

[tex]moles=\frac{180 grams*1mole}{294 grams}[/tex]

moles= 0.61

Molarity is a measure of the concentration of a substance that is defined as the number of moles contained in a certain volume. So, the molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

[tex]molarity=\frac{number of moles of solute}{volume}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].

In this case:

Replacing in the definition of molarity:

[tex]2 M=\frac{0.61 moles}{volume}[/tex]

Solving:

[tex]volume=\frac{0.61 moles}{2 M}[/tex]

volume= 0.305 liters

The volume of the solution is 0.305 liters.

Answer:

Temperature is a common type of controlled variable. If a temperature is held constant during an experiment, it is controlled. Other examples of controlled variables could be an amount of light, using the same type of glassware, constant humidity, or duration of an experiment.

Explanation:

Answer:

The plants in the northern and southern states during the summer receive the most sunlight and experience a growth period.

Explanation:

The plants in the northern and southern states during the summer receive the most sunlight and experience a growth period because in the summer season, plants receive more solar radiation as compared to winter season. Plant needs more solar radiation for higher growth. Photosynthesis is the process which helps the plant to produce more vegetation and this will only happens when the sunlight is high so we can say that summer season enables the plant to have more vegetative growth.

Answer: b

Explanation none

i made this up dont listen to me

Answer:

Mechanical energy

Explanation:

Given that,

Potential energy of an object is given by :

P = mgh

The kinetic energy of an object is given by :

[tex]K=\dfrac{1}{2}mv^2[/tex]

Where

m is mass

h is height

v is velocity of the object

The sum of potential and kinetic energy is equal to total energy or the mechanical energy.

Hence, if air resistance is negligible, the sum total of potential and kinetic energies of a freely falling body is equal to mechanical energy.

Answer:

The melting point of caffeine is 235°C and the boiling point is 178°C (4).

Explanation:

Answer:

Ethanol

Explanation:

This is not an redox reaction because the oxidation number of Oxygen atom is not changing.

Answer:

See Explanation

Explanation:

The reactivity of a metal towards water depends on the position of the metal in the electrochemical series. Metals that are high up in the series do react violently and spontaneously with water. Metals that are lower in the series are sometimes unreactive in water.

Hence, potassium reacts very rapidly with water to yield KOH and hydrogen gas while gold does not react with water.

SO2 react with water to form sulphuric acid hence SO2 is called an acid anhydride.

The reaction occurs in the following steps;

2SO2(g) + O2(g) ------->2SO3(g)

SO3(g) + H20(l) ------>H2SO4(aq)

Answer:

correct answer is d)

Explanation:

This answer demonstrates law of conservation of mass because the mass of the products is equal to the mass of reactants with the help of the coefficients which is the process known as balancing. This answer also includes the correct formulas, as Br is a gas so it MUST be written as Br2. hope this helps:)

2Al(s) + 3Br2(1) - 2AlBr3(s) is the  correct formulas and demonstrates conservation of mass.

Every action has an equal and opposite response, states Newton's Third Law. This indicates that any force applied to an item will have an equal and opposite-directed response force of the same magnitude. A force pair is the collective name for these connected forces.

Each individual object will have a different force pair with each other object in systems of numerous objects where all things interact. In the case of charged particles, the charge of each object will dictate the direction of each force in the force pair.

Similar charges will cause particles to repel one another by directing their forces away from one another. With their forces pointing in the same direction, particles with opposing charges attract one another.

Therefore, 2Al(s) + 3Br2(1) - 2AlBr3(s) is the  correct formulas and demonstrates conservation of mass.

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https://brainly.com/question/19694949

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Answer:

Explanation:

The properties that are observed or measured without changing the composition of matter are called physical properties.

color, Temperature, Texture are the physical properties as the composition of matter remains the same.

On the other hand, Radioactivity, Flammability and Reactivity comes under chemical property as during the chemical reactions there might be some changes in the properties.

Answer:

I believe it's either a or b but I'm pretty sure that it's a

Answer:

They are multilayered

Spacesuits provide protection from radiation and offer normal air pressure inside

Explanation:

Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, the electronic configuration of Nb²⁺ is [Kr]4d³.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

The systematic distribution of electrons in the various atomic orbitals is called its electronic configuration. The atomic number of Nb is 41. The electronic configuration of Nb is [Kr] 4d⁴ 5s¹. The electronic configuration of Nb²⁺ is [Kr]4d³. Nb²⁺ also has an odd number of valence electrons. The superscripts represents the number of electrons in each orbitals.

Therefore, the electronic configuration of Nb²⁺ is [Kr]4d³.

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brainly.com/question/8460633

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Answer:

Two Helium atoms

If two carbon atoms underwent fusion (of 600 million kelvin) you would get two helium atoms.

Answer:

D in addition to the original sample. In a file cabinet, she finds a paper labeled "Electrochemistry Activity" which lists five metals: zinc, aluminum, magnesium, silver and tin She is not able to find anything that identifies which metals correspond to which letters. She makes some quick observations, summarized below.

Explanation:

Answer:

You will need 12.0 moles of F₂

Explanation:

Based on the chemical equation, 2 moles of AlF₃ are produced when 3 moles of F₂ are added in an excess of Al.

Using this expression: 2mol AlF₃ = 3mol F₂ we can find the moles of F₂ as follows:

8.00 mol AlF₃ * (3mol F₂ / 2mol AlF₃) =

Answer:

90g

Explanation:

I hope this helps plz give brainliest ! :D

Answer:

prokaryotic

Explanation:

I got it right

Answer:

The answer is C

Explanation:

I did it on edge

Answer:

hey here is the answer to your question.

Explanation:

1) Write a balanced equation for the reaction occurring. (*Iron occurs in a few different oxidation states, but I will assume we're referring to Fe(II) or Fe2+)

Fe + CuSO4 -> Cu + FeSO4

2) Calculate the number of moles of each reactant.

Fe: 1.924 g * (1 mol / 55.85 g) = 0.03455 mol Fe

CuSO4: 0.1363 L * (0.0750 mol / 1 L) = 0.01022 mol CuSO4

3) Determine the limiting reactant. Because we have fewer moles of copper(II) sulfate and are reacting both reactants in a 1:1 ratio, we will run out of copper(II) sulfate first, making it the limiting reactant.

4) Convert moles of the limiting reactant to moles and grams of product of interest.

0.01022 CuSO4 (1 mol Cu / 1 mol CuSO4 ) (63.55 g Cu / 1 mol Cu) = 0.6495 g Cu

Answer:

2 e⁻ + Cl₂(g) → 2 Cl⁻(aq)

Explanation:

Let's consider the following balanced redox equation.

2 I⁻(aq) + Cl₂(g) → 2 Cl⁻(aq) + I₂(aq)

We can identify 2 half-reactions:

Oxidation: 2 I⁻(aq) → I₂(aq) + 2 e⁻

Reduction: 2 e⁻ + Cl₂(g) → 2 Cl⁻(aq)

We can identify the second half-reaction as the reduction reaction because Cl₂ gains 2 electrons and its oxidation number decreases from 0 to 1-.

Answer:

A

Explanation:

It's A