The electron configuration of an element is 1s^ 2 2s^ 2 2p^ 2 How many valence electrons does the clement have? (1 point )

Answers

Answer 1

Answer:

:)

Explanation:


Related Questions

HELP ME PLEASE
THANK YOU

Answers

Answer:

i think its letter D

Explanation:

Answer:

I think it is B if it is not then I am sorry.

Explanation:

Today scientists know that organisms are much less diverse than Darwin imagined.

True or false?

Answers

Answer:

FALSE

Explanation:

they were much more diverse

The other person is right it is false

How do combination circuits help prevent problems in circuits in a home? If it helps, think about a bedroom since all electrical work in a bedroom is on the same circuit.

Answers

‍♀️ ◻️✅◾️▫️‍◾️◻️◻️◼️

A sealed 512 cm3 flask is full to capacity with 16 g of a substance. Determine the density of the substance.​

Answers

Answer:

The answer is 0.031 g/cm³

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 16 g

volume = 512 cm³

We have

[tex]density = \frac{16}{512} = \frac{1}{32} \\ = 0.03125[/tex]

We have the final answer as

0.031 g/cm³

Hope this helps you

An acid-base reaction of (r)-sec-butylamine with a racemic mixture of 2-phenylpropanoic acid forms two products having different melting points and somewhat different solubilities. Draw the structure of these two products. How are the two products related? Be sure to answer all parts.

Answers

Answer:

See explanation

Explanation:

When an optically active compound reacts with a racemic mixture, two different products appear .

Hence, when (R)-sec-butylamine reacts with a racemic mixture of 2-phenylpropanoic acid as shown in the image attached.

Enantiomers are optical isomers which are mirror images of each other. The image attached was obtained from Bartleby.

Based on the results the students record, which group makes the most accurate measurements of the object?

Answers

Answer:

B.

Explanation:

It’s because when you subtract 78.5 and 77.5 you get 1. And when you do 79.5 and 78.5 you get 1 too. I know this because I got the answer right

Which is the smallest?
A) 1.3 x 1020
B) 2.9 x 1021
C) 9.5 x 1032
d) 8.4 x 1019

Answers

Answer: A, 1.3*1020, 1326

A. 1326

B. 2960.9

C. 9804

D. 8559.6

What components does the solar system appear to have formed from?

Answers

Answer:

I would say a dense cloud of interstellar gas and dust.

what is the percent of mercury?

Answers

Answer:

42%

Explanation:


what is a likely oxidation
state of Chlorine?
a)-1
b) 7
C) -7
d) +1

Answers

Answer: a) -1

Explanation:

What is your carbon footprint?

the amount of carbon dioxide you use when recycling
the amount of oxygen put into the atmosphere due to your consumption of fossil fuels
the amount of carbon dioxide and oxygen in the atmosphere at any given time
the amount of carbon dioxide put into the atmosphere due to your consumption of fossil fuels

Answers

Answer:

c. .....................

Answer: the amount of carbon dioxide put into the atmosphere due to your consumption of fossil fuels

Your carbon footprint is the amount of carbon dioxide and other carbon compounds emitted, because of your use of fossil fuels.

Hope this helps!

If air temperature decreases, then
wave height will decrease
ocean temperature will also decrease the same amount
ocean temperature will also decrease, but not as much
ocean temperature will also decrease, but a greater amount
wave height will increase

Answers

Answer:

ocean temp

Explanation:

If air temperature decreases, then wave height will decrease and ocean temperature will also decrease, but not as much.

What is ocean temperature ?

The water's temperature at the surface is known as the ocean surface temperature. Depending on the measuring technique, the term "surface" might signify anything from 1 millimeter to 20 meters below the sea's surface.

Due to changes in solar radiation and the physical characteristics of water, the temperature of ocean water fluctuates depending on location, both in terms of latitude and depth.

Water contracts and gets denser as it cools. The density of water is influenced by temperature and salinity, and as a result, water moves up or down through the ocean's strata and circulates as currents.

Thus, option B is correct.

To learn more about ocean temperature, follow the link;

https://brainly.com/question/12111508

#SPJ2

Which best explains how photosynthesis is helpful to humans? OIt reduces the amount of harmful rays released by the sun. O It increases the levels of carbon dioxide in the air. O It provides oxygen for humans to breathe. OIt produces proteins, which humans can eat.​

Answers

Answer:

C. sorry i am late :)

Explanation:

During photosynthesis, plants intake carbon dioxide from the air and releases oxygen. Thus, they are providing enough oxygen available for humans to breath.

What is photosynthesis?

Photosynthesis is a bio-chemical process by which green plants produces chemical energy with the aid of light energy absorbed by chlorophyll. Photosynthetic reaction is the combination of carbon dioxide and water giving molecular oxygen and glucose.

Through photosynthesis, the amount ox oxygen and carbon dioxide in the atmosphere is balanced. This balancing cycle involves respiration of animals also.

The carbon dioxide that we exhale are up taken by plants and converts to oxygen gas. This makes sufficient oxygen for all animals to breath. Therefore, photosynthesis is a stage in carbon cycle and oxygen cycle.

To find more on photosynthesis, refer here:

https://brainly.com/question/29776072

#SPJ5

Each water molecule can form hydrogen bonds with up to _____ neighbors

Group of answer choices

6

8

2

4

Answers

Answer:

2

Explanation:

thats the answer.have good day

Write the principle of separation of mixture.

Answers

Explanation:

Mixtures can be separated using a variety of techniques. Chromatography involves solvent separation on a solid medium. Distillation takes advantage of differences in boiling points. Evaporation removes a liquid from a solution to leave a solid material.

⚠️NEED HELP ASAP⚠️What is the oxidation number of nitrogen in (NO3)2
A) +3
B) +1
C+5
D) -5

Answers

Explanation:

its +5 trust me on this hope this helps kiddo

What is the volume of a weather balloon that has 39 grams of helium with a density 0.017 g/mL?

Answers

Answer:

The answer is 235.29 mL

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\ [/tex]

From the question.

density = 0.017 g/mL

mass = 4 g

We have

[tex]volume = \frac{4}{0.017} \\ = 235.2941176...[/tex]

We have the final answer as

235.29 mL

Hope this helps you

What phenomenon does the Coriolis effect arise from?

Answers

Answer:

because our planet is spinning

which means the objects near the equator are moving at much faster velocities than objects at higher latitudes

I hope this helps✌

Why is it easy for some elements to lose electrons and harder for others?

Answers

Answer:

The further away electrons are from the nucleus the easier it is for atoms to use electrons.

Explanation:

Please help will give brainliest

Answers

Answer:

6 g/cm³

Explanation:

Hi there !

density formula

d = m/V

V = 33.0ml - 25.0ml = 8.0 ml = 8 cm³

m = 48.0 g

replace

d = 48g/8cm³ = 6 g/cm³

Good luck !

What type of graph can show a positive correlation, negative correlation, or no correlation?

A. Pie chart
B. Bar graph
C. Scatter plot
D. Line graph

Answers

The answer is C. Scatter Plot

Which example illustrates a chemical change

shredding paper
smashing a soda can
burning wood
chopping wood

Answers

burning wood because heat indicates a chemical change
burning wood since it is changing into a new substance, whereas the other examples are not

Solve for Keq , given the following concentrations at equilibrium. Based on the calculated Keq, are products or reactants larger?
CO2 = 3.0 M O2 = 1.5 M CO = 2.0 M

Answers

Answer:

it blows up very lighty

Explanation:

Through what process is heat transferred between the warmpair in front of a
fireplace and the cooler air on the other side of the room?
A. Radiation
B. Conduction
C. Convection
D. Absorption

Answers

Answer:

c-convection

Explanation:

i think it may help you and if its helpful plzz mark as brilliant

Convection this is when warm air and cold air are in a cycle

____ energy is the energy a roller coaster stores while moving to the top of a hill.

A. G-Force

B.Potential

C. Stirred

D. Kinetic

Answers

Answer:

B

Explanation:

trust me im 100% correct

The gravitational attraction between two objects is determined by the mass of the two objects and the:
A. Distance between the objects
B. Weight of the objects
C. Diameter of the objects
D. Density of the objects

Answers

Answer:

A. Distance between the objects

Explanation:

The gravitational attraction between two objects is determined by the mass of the two objects and the distance between the two objects.

According to Newton's law of universal gravitation:

 "the gravitational force of attraction between two bodies is directly proportional to the product of the their masses and inversely proportional to the square of the distance between them".

          F = [tex]\frac{Gm_{1}m_{2} }{r^{2} }[/tex]

 F is the gravitational attraction

G is the universal gravitation constant

m is the mass

r is the distance

  We can see that the gravitational attraction depends on the mass of the bodies and the distance between them.

Nio conducts a science experiment. He puts yeast into a bottle with water and sugar, and then caps the bottle with a balloon. He returns two hours later and notices there are bubbles on the surface of the mixture in the bottle and that the balloon has inflated, but there are no other apparent changes.
What most likely happened?

a non-chemical change, because there are no indicators of chemical changes taking place
a chemical change, because the mixture changed color
a chemical change, because a gas was produced
a non-chemical change, because the changes that occurred are reversible

Answers

Answer:the answer is a chemical change, because a gas was produced

Explanation:  yeast is a chemical

Answer:

The answer is C.

"Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions."

Explanation:

Which of the following atoms has the greatest ionization energy?

a.)W
b.)C
C.)d
P.)d

Answers

Answer:

helium

Explanation:

because there are no electrons screening it from the nucleus

I need help on Chemistry?

ANYONE PLEASE?

Answers

Answer:

1. 1g/ml

Explanation:

1. Density is mass divided by volume (g/mL).

10g/10mL = 1 g/mL

2. When you already know the density and the volume, you can use the density as a unit converter.

[tex]5mL*\frac{20g}{mL} = 100g[/tex]

3. It's the same with density and mass.

[tex]20g*\frac{1mL}{5g} = 4mL[/tex]

Calculate the volume of this irregular solid to the nearest cubic centimeter.

What is the volume of the key?

Answers

Answer:

The answer is 8cm

Explanation:

:)

Answer:

8 cm

Explanation:

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