Please help meeeee!!

Please Help Meeeee!!

Answers

Answer 1
I’m almost positive the answer would be B. Electron promotion is when an electron “jumps” from a low energy level to a higher energy level.

Hope this helps!! (:

Related Questions

You have a 155-g sample of Al2O3. If there are 22.5 g of Al in the solution, what is the percent by mass of the solute? Use details to support your answer.

Answers

Answer:

14.52%

Explanation:

The percentage by mass (WW%) is calculated by using the formula:

Mass of solute/mass of solution ×

100

The solute (Al) is 22.5g while the solvent (Al2O3) is 155g

Hence, percent by mass is:

22.5/155 × 100

= 0.1452 × 100

= 14.52%

How many mL of ethanol would you
add to water to make 1750 mL of a
40.0% ethanol solution (v/v%)?

Answers

Answer:

700 mL of ethanol would be added

Explanation:

Given data:

Volume of ethanol added to make 40% v/v solution = ?

Total volume of solution = 1750 mL

Solution:

We will calculate the 40% 1750 mL which will be the volume of ethanol added to the water to make 40%v/v solution.

(40/100)× 1750 mL

0.4 × 1750 mL

700 mL

700 mL of ethanol would be added.

Pls help: What is the net equation for CNO cycle?

Answers

Answer:

The CNO cycle (for carbon–nitrogen–oxygen) is one of the two known sets of fusion reactions by which stars convert hydrogen to helium, the other being the proton–proton chain reaction (pp-chain reaction). Unlike the latter, the CNO cycle is a catalytic cycle.

How many moles of acetaminophen are in a 0.8mL (0.0008L) dose of infants Tylenol

Answers

Answer:

0.007 mol

Explanation:

Step 1: Given data

Volume of acetaminophen: 0.8 mL

Step 2: Calculate the mass corresponding to 0.8 mL of acetaminophen

The density of acetaminophen is 1.26 g/mL.

0.8 mL × (1.26 g/mL) = 1 g

Step 3: Calculate the number of moles corresponding to 1 g of acetaminophen

The molar mass of acetaminophen is 151.16 g/mol.

1 g × (1 mol/151.16 g) = 0.007 mol

In sexual reproduction, how many genes does an offspring receive for each trait ‍♀️​

Answers

Answer:

Each parent's half of the genes acquired  by the offspring. They  have two of each chromosome and hence two alleles of each gene, and one acquired from each parent.

Identify the type of chemical reaction that is described.

Answers

Answer:

Explanation:

A. Decomposition

B. Synthesis

C. Combustion

D. neutralization

.) 1. The Lewis valence dot electron structures are used to illustrate the number of valence electrons of atoms of representative elements. Considering this, use the Periodic Table to predict the number of "dots" that should be drawn around Antimony (Sb) to represent its Lewis Dot Structure.​

Answers

Answer:

put 5 dots

Explanation:

it has 5 valence electrons

Answer:

5

Explanation:

Antimony is in group 15 of the periodic table which means it has 5 valence electrons. Therefore, its Lewis Diagram should contain 5 dots to represent these 5 valence electrons.

Hope this helped!

if we weigh 30 kgf on the earth,how much will you weigh on the moon​

Answers

Answer:

5

Explanation: 1/6 of 30 is 5

I think 30 pound force

Why are city streets so vital to the functioning of a city, as well as the people living within it?

Answers

In the city, there is more people there including more resources. They also have a lot of good stuff in the city because they know it will attract a lot of people there because cities are so crowded.

Differentiate between physical and chemical change​

Answers

Explanation:

Physical Change is a type of change where by no new chemical substance is formed. Physical changes are reversible. whilst Chemical change is a change where new chemical substance is always formed. Chemical changes are usually irreversible.

Examples of Physical Change include;

Melting of Ice

Melting of Candle

Grinding of chalk

Magnetization of Iron

Examples of Chemical Change includes;

Cooking of food

Rusting of Iron

Burning of Charcoal

Which of the changes below would make Paul an effective interpersonal communicator?
I. Change his opening to a more calm and positive approach.
II. In his feedforward he should establish an appropriate timeframe and location.
III. He should add more criticism in his feedback.
IV. In the business section of his conversation he should include a list of everything Pat has
ever done wrong.

Answers

Answer:

i would say number 3 that was number 3

By changing  his opening to a more calm and positive approach pauld can become a an effective interpersonal communicator.Thus, option A is correct.

What is interpersonal communication?

Interpersonal communication is the way of communicating messages with each other. From person to person the way or tone of interpersonal communication will change.

We have to keep a good and polite behaviour to everyone when communicating with them. If we are going to criticize more it will hurt some people more than we expect.

To approach in a positive manner, we have to avoid prejudices and predictions and more expectation about others. But keep them in a polite manner in a very genuine friendship.

Interpersonal communication is important in any field especially in business field where, people have to gather , plan and contribute with each other. Hence Paul have to open more calm and positive approach.

To find more about interpersonal communication, refer the link below:

https://brainly.com/question/13682625

#SPJ2

A sector of a circle has an area of 132m². if the angle of the sector is 105,°,calculate the radius of the circle

Answers

Answer: 12

see the step by step below:

plz help with this.....☺​

Answers

Answer:

There is this property called CATENATION which is basically the tendency of the atoms to bind to eachother. It is the MOST in the carbon after that silicon.

So the answer should Carbon atoms bond together to form groups of compounds.

What does a particular point on a line of a phase diagram represent ?

Answers

Answer:

the line represents the condition where pressure and heat have the same effects.

Answer: C) The melting point of a substance at a specific pressure.

Which of the following is not an example of biased language?
a.
“You are too short to reach that.”
b.
“Are you deaf?”
c.
“Move along, grandpa!”
d.
“I think I’ve been gypped.”

Answers

Answer:

I think it is D.

Explanation:

Answer:

b

Explanation:

What happens in a double-replacement reaction?
A. An element replaces an element in another compound.
B. Two reactants combine to form one compound.
C. One compound separates into two or more products.
O D. The elements in two compounds switch places

Answers

Answer: D

Explanation: trust

Answer:

Explanation:

D

Which of the following notations is the correct noble gas configuration for Li

Answers

Noble gas configuration for Li : [He]2s¹

Further explanation

In an atom, there are levels of energy in the shell and sub-shell

This energy level is expressed in the form of electron configurations.

Lithium with atomic number 3, then the electron configuration:

1s²2s¹

And for noble gas configuration or it can be called Condensed electron configurations :

[He]2s¹

Answer:

[He]2s¹

Explanation:

An experiment was conducted to determine the density of a rock sample. The table shows a partial record of the experiment.
Experimental Record
Mass of Rock
86.59
Volume of Water in the Graduated Cylinder 142.5 mL
?
What information should be recorded in the last row of the table?

Answers

Answer: the density of the rock

55.91g/ml

Explanation:

The density of the rock after it had being placed in the cylinder of water so the calculation should look like this:

Volume of water substract the mass of the rock:

And that is 142.5 ml - 86.59g =

Answer 55.91 g/ml

So the density of the rock is 55.91g/ml

Which of the following is the FIRST step in solving the SI conversion problems?
PLEASE HELP, WILL MARK BRAINLIEST!!!

A) Fill in the "railroad tracks".
B) Write the relationship between the 2 units.
C) Review the SI prefixes.
D) Move decimals around to ensure the answer is in scientific notation.

Answers

Answer:

A

Explanation:

Answer:

It is A!

Explanation:

Heat being transferred from a hot pan to our food while cooking is an example of... *

conduction
convection
radiation
transpiration

Answers

A.conduction  i hope it helps

Answer:

conduction

Explanation:

What does unsaturated zone mean?

Answers

The unsaturated zone is the portion of the subsurface above the groundwater table. The soil and rock in this zone contains air as well as water in its pores. ... Unlike the aquifers of the saturated zone below, the unsaturated zone is not a source of readily available water for human consumption
the unsaturated zone is the area above the water table that carries no water

Calculate the frequency of a wave that is 4.3 x 10^-11 m the speed of light 5 points
is 3x10^8 m/s *
1 Add file

PLEASE HELP

Answers

30x10 just multiply and the answer you get you divide it by 8

Q3: Fingers and hands pulling, pushing, pressing, or lifting are all examples of applying a
Is it friction gravity motion or force

Answers

Answer:

force

Explanation:

because the force

first to answer correctly gets brainleist

Answers

when it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere. It could be A I’m not sure if this helps.

How many moles of oxygen are needed to burn 2.7 moles of methyl
alcohol (CH3OH)?
2CH2OH + 302 -→ 2CO2 + 4H2O
please show how you got it

Answers

Answer:

3.38 moles of O2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

4CH2OH + 5O2 → 4CO2 + 6H2O

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Finally, we shall determine the number of mole of O2 needed to react with 2.7 moles of CH2OH. This can be obtained as follow:

From the balanced equation above,

4 moles of CH2OH required 5 moles of O2 for complete combustion.

Therefore, 2.7 moles of CH2OH will require = (2.7 × 5)/4 = 3.38 moles of O2 for complete combustion.

Thus, 3.38 moles of O2 is required.

A natural resource that is replaceable through a cycle in nature or sustainable practice is called a ______________.

Answers

Answer:

renewable recource.

Explanation:

The half-life of carbon-14 is 5,730 years. Dating organic material by looking for C-14 can't be accurately done after 50,000 years. Suppose a fossilized tree branch originally contained 4.30 grams of C-14. How much C-14 would be left after 50,000 years?

Answers

Answer:

0.010g of C-14 would be later after 50,000 years

Explanation:

The kinetics of radioactive decay follows the equation:

Ln (N / N₀) = -kt

Where N could be taken as mass after time t,

N₀ initial mass = 4.30g;

k is rate constant = ln 2 / t(1/2)

= ln 2 / 5730years = 1.2097x10⁻⁴ years ⁻¹

Replacing:

Ln (N / 4.30g) = -1.2097x10⁻⁴ years ⁻¹ * 50000 years

N / 4.30 = 2.36x10⁻³

N =

0.010g of C-14 would be later after 50,000 years

can you help please??

Answers

Answer:

no

Explanation:

Answer:

The answer is B

An element X that has 15 protons and 15 electrons, loses three
electrons to form an ion.
What will be the charge on the ion?
What will be the number of protons and electrons in the ion?

Answers

Answer:

+3

12 electrons and 15 protons.

Explanation:

The element having 15 electrons and 15 protons have atomic number 15. We know that when an atom lose or gain the electron ions are formed.

Anion formation:

Anion is formed when electron is accept by an atom.

X + e⁻ → X⁻

Cation formation:

Cation is formed when electron lose be an atom.

X → X⁺ + e⁻

The given atom loses 3 electrons thus oxidation number will be +3 and cation is formed.

X → X³⁺ + 3e⁻

Now element X have 15 protons and 12 electrons.

Who is best associated with Psychoanalysis?
-Wilhelm Wundt
-Sigmund Freud
-William James
-None of the above
-Other:

Answers

Answer:

None of the above

Explanation:

Erikson's was a student of freud's and expanded of his theory of psychosexual development by emphasizing the importance of culture in parenting practices and motivations and adding three stages of adult development.

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