Many fundamental concepts are at the heart of chemistry. Match the description to the name.

Answers

Answer 1

Answer:

you dony have a picture for me to match them

Explanation:


Related Questions

A chemist performs the following reaction:
PCl5 (aq) + 4H2O (l) ⟶ H3PO4 (aq) + 5HCl (aq)
If she has 26.4 g of PCl5, what mass of water should she react to use up all of the
PCl5?

Looking for an in-depth step by step, please

Answers

Answer:

9.17 g

Explanation:

1) Calculate mols of PCl5

PCl5 (aq) + 4H2O (l) ⟶ H3PO4 (aq) + 5HCl (aq)

Mass of PCl5: 26.5g

Molar Mass of PCl5 208.24g/mol

Mol of PCl5 = Mass PCl5 /Molar mass PCl5  = 26.5g / (208.24g/mol) = 0.127257011 mol

2) Calculate mols of water needed to react

Mols of H2O per 1 Mols of PCl5 = 4 (because 4 water is needed to Phosphorus pentachloride).

Mols of H2O = Mol of PCl5 * 4 = 0.127257011 * 4 = 0.509028044 mols

3) Calculate Grams of water needed to react

Mols of H2O = 0.509028044 mols

Molar Mass of H2O = 18.015 g/mol

Mass of H2O = Mols of H2O * Molar Mass of H2O

= 0.509028044 mols* 18.015 g/mol = 9.17014021 g

sf = 3

9.17 g

Which functional group does the molecule below have?

Answers

Answer:

B

Explanation:

We can see here that the functional group that the molecule have is: B. Carbonyl

What is a functional group?

A functional group is a specific group of atoms or bonds within a molecule that is responsible for the characteristic chemical reactions and properties of that molecule. Functional groups are the parts of organic molecules that determine their reactivity and the types of chemical reactions they can undergo.

In organic chemistry, functional groups play a crucial role in understanding the structure and behavior of molecules. Different functional groups confer distinct properties to molecules, influencing their physical properties, solubility, acidity or basicity, and interactions with other molecules.

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Isomers are molecules that have the SAME molecular formula, but their atoms are bonded in a different way. Draw the 5 isomers of cyclopentane, C5H10 using Line Structural Diagrams only.

Answers

Answer:

1.methylcyclobutane

2.1-pentene

3.2-pentene(which can be Cis or Trans)

4.1,3-dimethylcyclopropane

5.ethylcylcopropane

I think these are it? I can't think of any other ones.

one of the biggest dangers of storms that produce heavy rains or storm surges is ___.
A. Low Temperatures
B. Flooding

Answers

Answer:

B. Flooding

Explanation:

Flooding can be caused by heavy rains/storm surges. Hope this helped!

What is a scientific law?

Answers

Answer:

Scientific laws or laws of science are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. The term law has diverse usage in many cases across all fields of natural science.

Explanation:

I hope this helps

Answer:

Scientific laws or laws of science are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. Scientific law differs from scientific theory. The main difference between a law and a theory is that a theory tries to explain the reasoning behind something that occurs in nature, whereas scientific laws are just descriptive accounts of how something occurs in nature.

Which one item of the list below does not describe part of beta decay?
A. The nucleus of the atom is unstable.
B. A neutron turns into a proton.
C. A proton turns into an electron.
D. An electron is ejected from the nucleus.

Answers

Answer:

C

Explanation:

When Beta decay happens, the atomic number of an element goes up, and that means there is an extra proton. A is not the answer because unstable atoms cause decay. B is also not correct because this is what happens in Beta decay: a neutron becomes a proton. D is not correct because an electron is actually emitted from the nucleus.

Oxygen gas is at temperature of 40c when it occupies a volume of 2.3 liters. To what temperature should it be raised to occupy a volume of 6.5 liters?

Answers

Answer:

884.6k

Explanation:

when a 2.71 mL sample of a 0.493 M aqueous nitrous acid solution is tutorage with a 0.308 M aqueous sodium hydroxide solution, what is the ph after 65.1 mL of sodium hydroxide have been added?

Answers

Answer:

0.10 M NaHA

Explanation:

Which transition could represent an atom that emits a photon with 10.2 eVeV of energy?

Answers

There is a co2 contotution

Which of the following is used for purification of water?
a) Sodium bicarbonate
b) Alum
c) Copper sulphate
d) Sodium Hydroxide​

Answers

A. Sodium bicarbonate is a water treatment method used to soften water (removing calcium and magnesium impurities from it) in older water softener systems. The process uses a chemical reaction to convert the calcium hydroxide (or magnesium hydroxide) into calcium carbonate, which isn't water soluble.

B. Alum, also known as potassium aluminum sulfate, can be used to purify water. ... Add 1.4 ounces of alum powder to the contaminated water in the reaction vessel and carefully stir the mixture with the stirring stick for at least five minutes. Sediment will form as the phosphorous in the water binds with the alum powder.

C. If Copper sulphate crystals are added to water it is called 'hydrated copper sulphate solution'.

If it is added to cold water then:-

it is more saturated

but if it is added to warm water then:-

it is unsaturated

and it turns bluish in colour in dissolving in water

D.  Sodium hydroxide is used in the treatment of drinking water to raise the pH of the water to a level that minimizes the corrosion. Raising the pH remains one of the most effective methods for reducing lead corrosion and minimizing lead levels in drinking water.

Solutions which can conduct electricity must contain:
atoms
minerals
molecules
ions

Answers

Answer

Ions

Explanation

What equipment is generally used to make lyophilized medications suitable for administering to the patient? a) Test tubes or sterile ampules O b) Petri dishes and sterile droppers c) Sterile syringes or graduated cylinders d) Measuring cups and clean, warm water

Please write out the balanced chemical equations for the following
reactions.
**Ensure you write the states of the reactants and products.**
• zirconium chloride reacts with scandium dichromate

Answers

Answer: Super idol

Explanation:

chinese malapoks

°ω° Which statement best describes the skier? The skier has potential and kinetic energy. The skier has only potential energy. The skier has only kinetic energy. The skier does not have potential or kinetic energy. °ω°

Answers

The skier has only kinetic energy

describe the components of a molecule whose atoms are joined by covalent bonds.

Answers

Answer:

nonmetal

Explanation:

In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.

What is the shape of SiH2O

Answers

Answer:

follow the above attachment.

Explanation:

hope this will help...

Consider Zn + 2HCl → ZnCl2 + H2 (g). If 0.30 mol Zn reacts with HCl, how many grams of HCl are needed?

Answers

Answer:

22 grams

Explanation:

Zn + 2HCl → ZnCl2 + H2

The first step to answering this question is to calculate the amount of moles of HCl needed. We do this by multiplying the coefficient of HCl in the equation over the coefficient of Zn.

0.30mol × [tex]\frac{2}{1}[/tex] = 0.60 mol HCl

Now, to figure out how many grams we must multiply the amount of moles of HCl by it's molar mass. This molar mass can be found by adding the molar masses of all the elements in HCl.

0.60mol × 36.46 g/mol = 21.87g

Using proper sig figs, 22 grams of HCl are required for this reaction.

How many hydrogen atoms are in 5CH3COOH?

Answers

Answer:   This formula indicates that a molecule of acetic acid (Figure 2.21) contains two carbon atoms, four hydrogen atoms, and two oxygen atoms.

Explanation:

Consider the energy transfers and transformations that occur when a person rides a bicycle. Describe thi
process by selecting the correct options from the drop-down menus.
Chemical energy is transformed into
energy in the person's muscles.
Kinetic energy is
from the person's legs to the pedals.
Kinetic energy is
thermal energy due to friction when the wheels get warm.
DONE

Answers

Answer:

b,a,b

Explanation:

The energy transfers and transformations that occur are kinetic energy is from the person's legs to the pedals and thermal energy due to friction when the wheels get warm.

What is law of conservation of energy?

The law of conservation of energy states that energy can neither be created nor destroyed but can be converted from one form to another.

The energy transfers and transformations that occur when a person rides a bicycle are:

Kinetic energy is from the person's legs to the pedals Thermal energy due to friction when the wheels get warm

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Please answer!!
No links.
Picture is included

The graph below displays the temperature and volume of a sample of a gas. What does the graph show.

A. The volume and temperature of the gas are not related
B. As the pressure of a gas increases its volume decreases
C. If the temperature of a gas doubles then its volume will also double
D. As the volume of the gas increases its temperature decreases

Answers

C. If the temperature of a gas doubles then its volume will also double.

Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride.
2NaCl(aq) + CuSO4(aq) → Na2SO4(aq) + CuCl2(s)
+
This equation represents a
O synthesis reaction.
O decomposition reaction.
O single replacement reaction.
O double replacement reaction.
O

Answers

Question:

Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride.

2NaCl(aq) + CuSO4(aq) → Na2SO4(aq) + CuCl2(s)

+

This equation represents a

O synthesis reaction.

O decomposition reaction.

O single replacement reaction.

O double replacement reaction.

Answer :

double replacement reaction

ありがとう!

Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride. This equation represents a double replacement reaction. Therefore, the correct option is option D.

What is double replacement reaction?

In a double replacement process, the ions in two input ionic compounds are exchanged for the same ions in two new product compounds. When two reactants swap cations or anions to produce two new products, the process is known as a double replacement reaction.

Double displacement reactions and metathesis reactions are other names for double replacement processes. Double replacement reactions include neutralisation, precipitation, and gas production. Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride. This equation represents a double replacement reaction.

Therefore, the correct option is option D.

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A car goes from 0 to 100m/s in 10s what is that acceleration

Answers

Answer:

10m\s

Explanation:

given

initial velocity(u)=0

final velocity (v)=100

acceleration(a)=?

we know,

acceleration = v-u/t

= 100-0\10

= 10 m\s

Which element represents magnetic properties?

Answers

Iron, cobalt and nickel!
Hope this helps!

Answer:Demagnetizing a magnet is also possible. Only a few substances are ferromagnetic; the most common ones are iron, cobalt and nickel and their alloys. The rare-earth metals neodymium and samarium are less common examples.

Explanation;

how many sightings of fish in spongebob were there, person who gets it right will get brainliest on god on everything

Answers

Depens on the fish, the skinny brown one appears ABOUT 960 times

A student borrows $10,000 from a bank but ends up paying $13,000 on the

loan over the next five years. How much interest did the student pay?

Answers

The student paid an interest of $3,000 over the next five years.

HOW TO CALCULATE INTEREST:

The interest on a borrowed amount of money can be calculated by subtracting the principal from the amount paid over time. That is;

Interest = principal - amount

According to this question, a student borrows $10,000 from a bank but ends up paying $13,000. This means that the principal is $10,000 while the amount is $13,000. The interest is calculated thus;

Interest = $13,000 - $10,000

Interest = $3,000

Therefore, the student paid an interest of $3,000 over the next five years.

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A gas sample occupies 8.76 L at a temperature of 37°C. What is
the volume if the temperature is lowered to 0°C at constant
pressure?

Answers

Answer:

A.

Explanation:

A 2.50-mL aliquot of a solution that contains 6.4 ppm iron(III) is treated with an appropriate excess of KSCN to form the Fe(SCN)21 complex and diluted to 50.0 mL. What is the absorbance of the resulting solution at 580 nm in a 2.50-cm cell

Answers

Answer:

In the final solution, the concentration of sucrose is 0.126 M

Explanation:

The number of moles of solute in the volume taken from the more concentrated solution will be equal to the number of moles of solute in the diluted solution. Then, the concentration of the first solution can be calculated using the following equation:

Ci · Vi = Cf · Vf

Where:

Ci = concentration of the original solution

Vi = volume of the solution taken to prepare the more diluted solution.

Cf = concentration of the more diluted solution.

Vf = volume of the more diluted solution.

For the first dillution:

26.6 ml · 2.50 M = 50.0 ml · Cf

Cf = 26.6 ml · 2.50 M / 50.0 ml

Cf = 1.33 M

For the second dilution:

16.0 ml · 1.33 M = 45.0 ml · Cf

Cf = 16.0 ml · 1.33 M / 45.0 ml

Cf = 0.473 M

For the third dilution:

20.0 ml · 0.473 M = 75.0 ml · Cf

Cf = 20.0 ml · 0.473 M / 75.0 ml

Cf = 0.126 M

In the final solution, the concentration of sucrose is 0.126 M

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What is the original source of all energy for animals? (1 point)
A. the sun
B.sugars
C.other animals
D.plants

Answers

Sugars. The food we eat is then broken down into ATP.

Answer:

The SunI

Explanation:

Convert 23 grams of nitrogen dioxide into moles of nitrogen dioxide.

Answers

Answer:

We have to convert the following into moles.

(a) 32 g of oxygen gas = 1 mole

1 gram of oxygen gas = 1/32 mole

Given that 12 g of oxygen gas

No: of moles = given mass / molar mass

= 12 / 32  = 0.375 mole

(b) 18 g of water = 1 mole

1 gram of water = 1/18 mole

Given that 20 g of water

No: of moles = given mass / molar mass

= 20 / 18  = 1.111 mole

(c) 44 g of carbon dioxide = 1 mole

1 gram of CO2 = 1/44 mole

Given that 22 g of carbon dioxide

No: of moles = given mass / molar mass

= 22 / 44 = 0.5 mole

Explanation:

A 0.1 M NaCl solution and a 0.2 M glucose solution are separated by a membrane that is impermeable to these solutes but is permeable to water. What will happen

Answers

nothing will happen

if you calculate the water potiential for both solutions

you get 2(0.1)(R)(T) and 1(0.2)(R)(T)

which is the same thing, so its isotonic.

11) What volume will 0.75 mol of Oxygen gas (O2) occupy at 298 K and a pressure of 52.7 kPa?

Answers

Answer:

Volume = 35.3L

Explanation:

Use Ideal Gas Law (PV=nRT) and isolate for V (volume) by dividing both sides by P (pressure). You will then get the eqaution listed below and you can solve by using the method I used below.

V = nRT/P

V = (0.75kPa)(8.314)(298K)/(52.7kPa)

V = 1858.179/52.7

V = 35.3L

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