how do the physical and chemical properties of an element change when they are used to make a compound

Answers

Answer 1

A compound is formed while atoms of or extra physical bond collectively chemically changes. For example, desk salt is a chemical compound that effects while atoms of Sodium (Na) bond with atoms of chlorine (Cl).

The residences of an detail do alternate while that detail combines with different factors to shape compounds. There are handiest 118 recognized factors which integrate to make the entirety withinside the universe. If you consider that, you will see that the residences of the detail have to alternate relying upon the compound it's far in.

For example, water is a compound crafted from the factors hydrogen and oxygen. Sugar is likewise a chemical compound which incorporates hydrogen and oxygen, in addition to carbon. The residences of the hydrogen atoms are one of a kind while they're a part of a sugar molecule than while they're a part of a water molecule.

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Related Questions

Please help with this Unit Conversions problem!

"Convert 7.54 kg to mg. Show your work."

Answers

Answer:

7,540,000 mg

Explanation:

1 kg = 1,000,000 mg

7.54 kg x 1,000,000= 7,540,000 mg

Those microscopic organisms perform what 2 processes that help pave the way for lichen by creating organic material.

Answers

Answer:

Decomposition pf residues and weathering of rock.

Explanation:

Microorganisms performs two processes such as decomposition and weathering of rock materials. These two processes make the medium suitable for the growth and development of the lichens because these processes increases nutrient and organic matter on the rock surface that is used by the lichens for its growth. In decomposition process, larger compounds are broken down into simpler substances while on the other hand, the weather of rocks causes breakdown of rock material into simpler minerals that also used by the lichens.

How many grams of KCl are made when 5.02 moles of
ZnCl2 react in the reaction below?
2KMnO4 + ZnCl2 → 2KCl + Zn(MnO4)2
lol pls help me

Answers

Answer: 747.98 grams of KCl are made when 5.02 moles of  [tex]ZnCl_2[/tex] react in the reaction.

Explanation:

The balanced chemical equation is:

[tex]2KMnO_4+ZnCl_2\rightarrow 2KCl+Zn(MnO_4)_2[/tex]

According to stoichiometry:

1 mole of [tex]ZnCl_2[/tex] produce = 2 moles of [tex]KCl[/tex]

Thus 5.02 moles [tex]ZnCl_2[/tex] will produce =[tex]\frac{2}{1}\times 5.02=10.04[/tex] moles of [tex]KCl[/tex]

Mass of [tex]KCl=moles\times {\text {molar mass}}=10.04mol\times 74.5g/mol=747.98g[/tex]

Thus 747.98 grams of KCl are made when 5.02 moles of  [tex]ZnCl_2[/tex] react in the reaction.

Phenolphthalein indicator is??

Answers

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes.

Hope it helps!

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Why the colloid can't be filitred?Write it's 4 examples.​

Answers

Answer:

Constituent substances of a colloid cannot be separated by ordinary filtration because the size of the particles in a colloid (or colloidal solution) is bigger than those in a true solution but smaller than those in suspension. It is between 1 nm to 100 nm in diameter.

ex- cheese, milk, aerosol spray, mayonnaise

Why must the mass of reactants in a chemical reaction
always equal the mass of products?

Answers

Answer:

law of conservation

Explanation:

matter cannot be destroyed nor made

How many grams are in 4.5 x 10^22 molecules of water? please show dimensional analysis

Answers

Answer:

1.1grams

Explanation:

Find moles of water:

4.5x10^22/(6.02x10^23)=0.07mol

Find molar mass of the water

O=16.00g/mol

0.07x 16.00=1.1 grams

I NEED THIS LESS THAN 7 MINUTES IYS 15 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! What is the difference between a balanced equation and an unbalanced equation?
All of the answers are correct.
A balanced equation obeys the law of conservation of mass, an unbalanced equation does not. An unbalanced equation shows the conservation of mass.
Balanced equations do not show equal numbers of atoms on each side of the equation.

Answers

Answer:

Balanced equation have equal number of atoms of different elements in the side of reactants and products.

Answer:

- A balanced chemical equation has an equal numbers of atoms of different elements in the side of reactants and products.

- An unbalanced chemical equation has an unequal number of atoms of one or more elements in the reaction.

Explanation:


Light is a type of energy produced by the vibration of electrically charged particles.
True or false?

Answers

Answer:

big brain

Explanation:

which shows how much electron is in the outer layer

Answers

Answer:

is there a picture or is it multiple choice?

There are moles of carbon present in 100 g of a
compound with the following percentage composition:
C= 40.0%, H = 6.72%, O = 53.29%.

Answers

Answer: 3.33

Explanation:

The molecular formula of the given composition is C₃H₆O₃.

What is molecular formula?

Molecular formula is defined as a compound's chemical formula, which counts the total number of each element present in a molecule of the compound as discrete molecules. The arrangement of atoms in a molecule in three dimensions is known as molecular geometry, commonly referred to as the molecular structure.

The percentage composition is

C = 40.00 %

H = 6.72 %

O = 53.29 %

Mole = 100 g

Mass of C = 40 / 100 x 100 = 40 g

mass of H = 6.72 / 100 x 100 = 6.72 g

Mass of O = 53.29 / 100 x 100 = 53.29 g

Dividing the mass with moles

C = 40 / 12 = 3.3

H = 6.72 / 1 = 6.72

O = 53.29 / 16 = 3.3

Formula = C₃H₆O₃

Thus, the molecular formula of the given composition is C₃H₆O₃.  

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How many grams of glycerine, C3H8O3, are needed to make 100. mL of 2.60 M solution?

Answers

Answer:

the mass of the glycerine needed in the given solution is  23.92 g

Explanation:

Given;

molarity of the solution (C₃H₈O₃), C = 2.60 M

Volume of the solution, V = 100 mL = 100 x 10⁻³ L = 0.1 M

The molarity of a solution is given as follows;

[tex]Molarity = \frac{amount \ of \ solute \ (moles)}{volume \ of \ solution \ (L)} \\\\amount \ of \ solute \ (moles) = Molarity \ \times volume \ of \ solution \ (L)\\\\amount \ of \ solute \ (moles) = 2.6 \times 0.1 \\\\amount \ of \ solute \ (moles) = 0.26 \ mole[/tex]

The molecular mass of the given solution;

molecular mass = (12 x 3) + (8 x 1) + (16 x 3)

molecular mass = 92 g/mol

The mass of the glycerine needed in the given solution is calculated as follows;

reacting mass = amount of solute (moles)   x   molecular mass (g/mol)

reacting mass = 0.26 x 92

reacting mass = 23.92 g

Therefore, the mass of the glycerine needed in the given solution is  23.92 g

A study was conducted to see if increasing the substrate concentration has an appreciable effect on the velocity of a chemical reaction. With a substrate concentration of 1.5 moles per liter, the reaction was run 15 times, with an average velocity of 7.5 micromoles per 30 minutes and a standard deviation of 1.5. With a substrate concentration of 2.0 moles per liter, 12 runs were made, yielding an average velocity of 8.8 micromoles per 30 minutes and a sample standard deviation of 1.2. Is there any reason to believe that this increase in substrate concentration causes an increase in the mean velocity of the reaction of more than 0.5 micromole per 30 minutes

Answers

Answer:

There is not enough evidence

Explanation:

For  1.5 moles substrate concentration per liter

Reaction ( n2 ) = 15 runs

average velocity ( x2 ) = 7.5 micromoles per 30 minutes

standard deviation ( s2 ) = 1.5

For 2.0 moles substrate concentration per liter

Reaction( n1 ) = 12 runs

average velocity ( x1 ) = 8.8 micromoles per 30 minutes

standard deviation ( s1 )  = 1.2

Show Reason to believe that this increase in substrate conc causes an increase in mean velocity

Hypothesis test

H0 : μ1 - μ2 = 0.5

H1 : μ1 - μ2  > 0.5

level of significance ( ∝ ) = 0.01

attached below is a detailed solution to the problem

P-value ( 0.073 ) > level of significance ( 0.01 ) hence we fail to reject the null hypothesis

hence there in not enough evidence to believe that this increase causes an increase in the mean velocity of the reaction of more than 0.5 micromole per 30 minutes

How many atoms are in 14 moles of I? Watch your significant figures.
8.4 x 1024 atoms of l
8.43 x 1024 moles of I
8.4 x 1023 atoms of l
8.43 atoms of l

Answers

Answer:

8.43 x 1024 moles of I

Explanation:

Predict: Based on your hypothesis, which population(s) would be hurt if bears were added?

Answers

Answer:

all of em, unless the bear is normal to the environment

What is the new pressure if the temperature outside is 296k and his weight causes the tire's volume to drop to 2.0 liters

Answers

Question:

At standard temperature and pressure, the volume of a tire is 3.5L. What is the new pressure if the temperature outside is 296k and its weight causes the volume of the gas is 2.0 L?

Answer:

The new pressure is: 1.896 atm

Explanation:

At standard temperature and pressure, we have:

[tex]P_1 = 1atm[/tex]

[tex]T_1 = 273.15k[/tex]

[tex]V_1 = 3.5L[/tex]

Outside, we have:

[tex]T_2 = 296k[/tex]

[tex]V_2 = 2.0L[/tex]

Required

Determine the new pressure

Using combined gas law, we have:

[tex]\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}[/tex]

This gives:

[tex]\frac{1 * 3.5}{273.15} =\frac{P_2*2.0}{296}[/tex]

Solve for [tex]P_2[/tex]

[tex]P_2 = \frac{296 * 1 * 3.5}{273.15*2.0}[/tex]

[tex]P_2 = \frac{1036}{546.30}[/tex]

[tex]P_2 \approx 1.896 atm[/tex]

Please help with these two (last question is nwse)

Answers

Answer:

your answer gonna be 20 miles

Can someone please help

Answers

Answer:

5.

A. Period

B. Group

6. C

Explanation:

If you observe a Full Moon on January 12th, on what date would you observe the next New Moon?

Answers

January 19

Explanation:

every first 7 days of a month the moon roughly starts its full moon phase

I am doing a break-out room and it won't let me pass I think I have all the other questions correct so this is the only one I'm not sure about.

Answers

1. figure one

2. figure two

3. figure three

4. figure two

5. figure one

Answer:

it goes A,C,B,C,A

Explanation:

What is the mass of 5.6 moles of Iron (III) Oxide?

Answers

Answer:

312.731

Explanation:

it had a long answer but im sure ur teacher wanted u to round it

hope this helps!

~goldfishareswag/brianna

:)

Iron (III) oxide= Fe2O3
1) Find the gfm (gram formula mass, the gfm is the grams per mole. So, you’re pretty much finding one mole of Fe2O3) of Fe2O3
2 Fe: 2(55.845)
3 O: 3(15.9994)
=160 gfm
2) multiply gfm by mole number
160(1 mole of Fe2O3 is 160. What are 5.6 moles?)
160 x 5.6
= 896g

1. what is an ethical concern about biotechnology

2. list 2 examples of transgenic organism

3. write a 3-sentences summary on how biotechnology affects individual, society, and environment

Answers

Answer:

1. There are so many ethical concerns about biotechnology, some Ethical issues that arise from the application of modern biotechnologies include:

Discrimination of individuals because of their health or health history as a result of knowing their genetic information,  minimizing harms while maximizing benefits, Interference with nature, privacy.

2. a. Plants (maize, rice)

   b. Fish (GloFish)

3. For individuals, biotechnology has helped in the prevention and treatment of a wide range of diseases. For society, biotechnology saves time, improves the health and quality of food through a reduction in the use of pesticides and it can create new viruses and bacteria that cause diseases. Biotechnology could address global change since more genetically modified plants are grown.

An organ system is formed by..

A) two or more cells working together.

B) two or more tissues working together.

C) two or more organs working together.

D) two or more organisms working together

Answers

I think it is b because it's made up out of two or more tissues

neeeeeeeed help with science

Answers

Answer: should be 28 degrees

Explanation:

An atom of a certain element has 19 protons, 19 electrons, and a mass number of 39. This element is very reactive. How many neutrons are in this atom?



Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Answers

Answer:

There are 20 neutrons in this atom.  

Explanation:

A book is pushed and released and it slides across a table for a short distance. The book quickly comes to a stop. The book originally
has kinetic energy. To what form of energy is the kinetic energy transformed?
A)
The kinetic energy is transformed into heat.
B)
The kinetic energy is transformed into chemical energy.
C)
The kinetic energy is not transformed into any other type of energy.
Eliminate
D)
The kinetic energy is transformed into electrical energy.
Law of Conservation of Energy
(58P2.c) Energy Transformation
D 149628
Regular Cals
Scientific Cals
My

Answers

Answer:

A

Explanation:

The book encountered friction which turned some of the energy into heat.

If 335 g water at 35.5C loses 5750 J of heat, what is the final temperature of the water?

Answers

Answer:

The final temperature is  39.58 degree Celsius

Explanation:

As we know

Q = m * c * change in temperature

Specific heat of water (c) = 4.2 joules per gram per Celsius degree

Substituting the given values we get  -

5750 = 335 * 4.2 * (X - 35.5)

X = 39.58 degree Celsius

Acid HX has a very large Ka. How will the relative amounts of H+ and HX
compare at equilibrium?
A)The concentration of H+ will be larger than HX
B)The concentration of HX will be larger than H+
C)The concentration of HX will be equal to H+

Answers

The right answer is A

NO FILES OR LINKS PLEASE HELPPPP IVE ASKED THIS 3 TIMES AND ALL I GET IS SCAM FILES ILL GIVE YOU BRAINLIEST PLEASE



What is the skeleton equation for
CuSO4 + 2NaOH → Cu(OH)2 + Na2SO Copper sulfate + Sodium hydroxide --> copper hydroxide + sodium sulfate ​

Answers

Answer:

*Inserting real answer*

Explanation:

I think CuSO4 + 2NaOH → Cu(OH)2 + Na2SO4 is the skeleton equation.

If I am wrong I am so sorry!!!

Have a nice day! :)

Also sorry for all the fake answers you have been getting that happened to me too TnT

An ball with a weight of 0.5 kg is sitting on a shelf that is 3 meters high. Help me! This is 8th grade sci btw.

Answers

Complete question:

A ball with a weight of 0.5 kg is sitting on a shelf that is 3 meters high. What is the gravitational potential energy of the ball ?

Help me! This is 8th grade sci btw

Answer:

the gravitational potential energy of the ball is is 14.7 J.

Explanation:

mass of the ball, m = 0.5 kg

height above the ground on which the ball is sitting, h = 3 m

The gravitational potential energy of the ball is calculated as follows;

P.E = mgh

P.E = 0.5 x 9.8 x 3

P.E = 14.7 J

Therefore, the gravitational potential energy of the ball is is 14.7 J.

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nicole has a personality disorder. she has difficulty maintaining relationships because she goes back and forth from being a best friend to hating people in her life quite often. her romantic relationships are always characterized by incredible loving passion alternating with episodes of horrible fighting, and sometimes she becomes violent. at times nicole becomes so upset that she cuts herself and reports that this makes her feel better emotionally. nicole suffers from personality disorder. select one: a. histrionic b. dependent c. paranoid d. borderline e. narcissistic Guided practice (page 4)Previous pageDistance from the ground in floors11+10+of8+741...C8 9 10Which of the following statements are true about the elevator? Select all that apply.Elapsed time in secondsThe elevator stayed 3 floors above the ground initially, then went to a lower floor.The elevator stayed 3 floors above the ground initially, then went to a higher floor.The elevator appeared to be moving faster when going up than when going down.The elevator stayed 7 floors above the ground for 2 seconds.HintSubmit Answer When should a hardware device be replaced in order to minimize downtime? What are the three main types of savings accounts? What are the ethical issues of genetic modification? In which triangle all the sides are equal and all the angles are also equal *? What event was yellow journalism used in to trigger a war with Spain? What are the riskiest times for a pregnant woman to be exposed to a teratogen and why? How can media affect the lives of individuals? Determine the domain of the following graph find the k-value so that the point is on the line kx+3y=7; (1,-k) if a mutation is made within the active site of an enzyme resulting in a decrease in km, which of the following will be true with respect to the enzyme kinetics? The Vmax of the reaction will increaseThe concentration of substrate needed to reach Vmax will not changeThe enzyme will require a higher substrate concentration to reach VmaxThe enzyme will require a lower substrate concentration to reach Vmax 3. Mary is a real estate agent. One month she sold 7 houses at these prices: $171 000, $165 000, $178 000, $161 000, $174 000, $168 000, $240 0003.a) What is the median price of the houses she sold?3.b) Do you think the mean price is greater than or less than the median price of the houses sold that month? Why?3.c) Which average do you think better represents a typical price of houses she sold that month? Why? A car travels 62 miles per hour. At this rate, how far will the car travel in 7 hours? How do cells and viruses differ in structure? PLEASE HELP ASAP! 40 POINTS!The talent show committee is anticipating selling 300 tickets to the talent show. They expect 180 adults to attend, and 120 children to attend. They hope to raise $1,440 from ticket sales to purchase classroom supplies. Adult tickets will be twice as expensive as child tickets. For what prices should the committee sell adult tickets and child tickets to the show? How do you find the mean and standard deviation of a random variable? Which best describes Montesquieus view of Government?A - All people are equal B - Power should not exist C - Power should be consolidated (or put in one place.)D - Power should be separated What does the fence symbolize in the story? PLEASE HELP ASAPA line that passes through the points (-1, -4) and (4, 2) is shown.Which equation is the equation of the line that is perpendicular to the given line and passes through the point (-3, 7) ?