I am doing a lab and I am not sure how to calculate the concentration of the chemical formulas used in the lab. Would I need to use the 15ml and add it to the 10 ml of the first solution to find the concentration. Thank you

Answers

Answer 1

Answer:

C = m/V

Explanation:

In order to calculate the concentration of a mixture you would need to use the formula for concentration, which is the following...

C = m/V

In this formula C is the concentration, m is the mass of the compound that is being added and mixed into the solution, and V is the total volume of the mixture. The mass of m is in terms of number of moles. Therefore, we would need more information in order to calculate the actual concentration of the mixture that you are trying to find in this scenario. Using the formula above should be enough using the values that you have in your actual workbook.


Related Questions

What is the value of R in the ideal gas law?
O A. -0.0821 L'atm/mol K
OB. 0.0821 L'atm/mol:K
O c. 273 L'atm/mol K
O D. -273 L'atm/mol K

Answers

It’s option B 0.0821L.atm/mol.K

Balance the equation of. _C + _O2 -- _CO

Answers

Explanation:

2C +O2 = 2CO

this will be the answer

Determine the excluded volume per mole and the volume actually occupied by a mole for a gas consisting of molecules with radius 167 pm. [Note: To obtain the volume in liters, we must express the radius in decimeters (dm).] Enter your answers in scientific notation.

Answers

Answer:

Explanation:

Volume of one mole of a gas = 22.4 litre.

No of molecules in one mole of gas = 6.02 x 10²³ .

Volume of one molecule = 4/3 π R³

= 4/3 x 3.14 x ( 167 x 10⁻¹² m )³

= 19.5 x 10⁶ x 10⁻³⁶ m³

=19.5 x 10⁻³⁰ m³

= 19.5 x 10⁻³⁰ x 10³ litre .

=  19.5 x 10⁻²⁷ litre .

So volume occupied by molecules in one mole of gas

= 19.5 x 10⁻²⁷ x 6.02 x 10²³  litre

117.4 x 10⁻⁴ litre

= .01174 litre.

Excluded volume

= ( 22.4 -  .01174  ) litre .

= 22.388 litre.

What is the symbol for an ion with a 3+ charge, 28 electrons, and a mass number of 71

Answers

Answer:

Ga3+ is a gallium cation

Q2.
This question is about metals and metal compounds.
(a)
Copper oxide reacts with hydrochloric acid to produce copper chloride and water.
Copper oxide is insoluble in water.
Copper oxide is gradually added to hydrochloric acid until in excess.
Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen.
Plan an investigation to find the accurate volume of hydrogen produced from
magnesium
You do not need to write about safety precautions.​

Answers

Answer:

sry I don't know the answer

Balance equation for. _Mg + _H3(PO4) --_Mg3(PO4)2+ _H2

Answers

3Mg + 2H3(PO4) —> Mg3(PO4)2 + 3H2

I think

During a process called photoact, ________ give up an electron as a part of the light-dependent reactions.

Answers

Answer:

Chloroplasts?

Explanation:

hey armies.. how are you doing​

Answers

Answer:

Nice and you

Explanation:

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you know it's kinda rough out here for us

To make a sarurated solution, 36 g of sodium chloride is dissolved in 100 g of water at 293 k . Find its concentration at this temperature

Answers

Answer:

The answer is "[tex]26.47\%[/tex]"

Explanation:

Sodium chloride  solute mass[tex]=36 \ g[/tex]

Solvent water mass[tex]=100\ g[/tex]

Calculating the solution mass = Solute mass  + solvent mass

                                                  [tex]= 36\ g +100\ g\\\\ = 136\ g\\\\[/tex]

Calculating the percentage of concentration:

[tex]= \frac{solute\ mass}{solvent\ mass} \times 100\\\\=\frac{36\ grm}{136\ grm} \times 100\\\\=0.2647 \times 100\\\\=26.47 \%[/tex]

A 10.0 L balloon contains helium gas at a pressure of 655 mmHg. What is the final pressure, in millimeters of mercury, if the final volume is 13.8 L? Please show your work in order to receive credit.

Answers

Answer:

474. 64 mm Hg

Explanation:

P1 = 655 mm Hg V1 = 10 L

P2 = ? V2 = 13. 8 L

using Boyle's Law that is

P1. V1 = P2. V2

655 × 10 = P2 × 13. 8

[tex]P2 = \frac{655 \times 10}{13.8} [/tex]

P2 = 474. 64 mm Hg

What is the valency of Aluminium and nitrate in Al(NO3)3 ?​

Answers

Answer:xl/ck xLKsx

Explanation:sl/cs c/ls

What is one way to neutralize acidic lakes using an acid-base reaction?

Answers

[tex]\huge\fcolorbox{red}{pink}{Answer ♥}[/tex]

Solutions for Neutralization of Acidic Lakes. ... A common solution to increase water hardness in acid lakes is to add lime, a high-alkalinity calcium compound to the acid lakes. This method is only temporary and very expensive, as it often needs to be applied every year.

Hope it helps uh ✌️✌️

A common solution to increase water hardness in acid lakes is to add lime, a high-alkalinity calcium compound to the acid lakes.

What is the salt produced in the stomach when calcium carbonate reacts with and neutralizes excess hydrochloric acid?

Answers

Answer:

The salt CaCl2 (calcium chloride) and water (H2O) are formed in this reaction. Also formed is the gas carbon dioxide (CO2) which may cause a bloated feeling in the stomach. The acid that is secreted in your stomach is approximately 0.1 M (moles per liter) hydrochloric acid.

I hope it helps ~

In the past mining companies were not made responsible for the clean-up of any of the mine sites. As a result, abandoned mines had a severe impact on the environment in Ontario. Which of these is not a result of these mining practices?

1) Chemical reactions producing sulphuric acid decrease soil and water PH in the area.
2) Acid leaching dissolves metals found in the soil thus allowing them to enter the water system.
3) Heavy metals which are left tailing ponds can dissolve and enter the water system.
4) Old and inefficient mining smokestacks contaminate the soils around abandoned mine sites.

Answers

Answer:

Old and inefficient mining smokestacks contaminate the soils around abandoned mine sites.

Explanation:

A smokestack, is a very tall channel commonly used in many instances to release gases produced by combustion processes directly into the air. These high towers are aimed at dispersing the gaseous pollutants over a wider area thereby minimizing their impact.

Old and inefficient smokestack do not contaminate the soil since they are very high towers that discharge gases directly into the atmosphere. Hence they are not part of the sources of soil contamination in abandoned mines.

1. All of the following statements are true
regarding spontaneous process, EXCEPT:
A. It occurs without requiring an outside
force.
B. It can be a physical or chemical change
C. It will continue until equilibrium is
reached.
D. It will suddenly stop once products ar
formed.
Which of the following is an example of a
spontaneous process?
A. Melting of ice in room temperature
B. Transfer of heat from a cold objectt
hot object
C. Removing rust on an iron nail
D. Separation of hydrogen and oxygen
atoms via electrolysis​

Answers

Answer:

ïgGshdhdhdhdhdbdhdhdjddk

There are two types of automatic exposure control: photodiode and the more common parallel plate ionization chamber. How are they positioned

Answers

Answer:

Following are the response to the given question:

Explanation:

In the given question the automatic exposure is used as the management which is offered in two distinct methods: photodiode as well as the parallel ionizing tank. In both are positioned as the absolute pressure type is between the patient as well as the receptor, behind the image receptor the photoelectric is placed.

How many bonds can a carbon atom form?
O A. 1
B. 2
C. 4
O D. 3

Answers

It’s C/4 have a good day

What is a rechargeable battery?
a group of electrochemical cells that can be recharged
a group of electrolytic cells that can be recharged
a group of electrochemical cells that do not need recharging
O a group of electrolytic cells that do not need recharging
WILL GIVE BRAINLIEST

Answers

Answer:

a group of electrochemical cells that can be recharged

El simbolo del ion que contiene 24 protones, 28 neutrones y 21 electrones es : A)Sc+3 B)Sc-3 C)Sc D)Cr E)Cr-3

Answers

Answer:

Cr ^ 3 +

Explanation:

Recordemos que el número atómico es el número de protones en el núcleo del átomo. También corresponde al número de electrones en el átomo neutro.

Dado que el número de protones es 24, entonces el elemento debe ser cromo.

Si hay 21 electrones presentes, entonces se deben haber perdido 3 electrones para dar Cr ^ 3 +.

Which statements are consistent with Dalton"s atomic theory as it was originally stated? Why? a. Sulfur and oxygen atoms have the same mass. b. All cobalt atoms are identical. c. Potassium and chlorine atoms combine in a 1:1 ratio to form potass...

Answers

The question is incomplete, the complete question is:

Which statements are consistent with Dalton's atomic theory as it was originally stated? Why?

a. Sulfur and oxygen atoms have the same mass.

b. All cobalt atoms are identical.

c. Potassium and chlorine atoms combine in a 1:1 ratio to form potassium chloride.

d. Lead atoms can be converted into gold.

Answer: The correct options are b) and c).

Explanation:

Some of the postulates of Dalton's atomic theory are:

All matter is made of very tiny particles called atoms that participate in chemical reactionsAtoms are indivisible particles that cannot be created or destroyed in a chemical reactionAtoms of a given element are identical in mass and chemical propertiesAtoms of different elements have different masses and chemical properties.Atoms combine in the ratio of small whole numbers to form compounds.The relative number and kinds of atoms are constant in a given compound.

For the given options:

For a:

The statement is inconsistent with the theory as no two elements can have the same mass. Only atoms of the same element can have the same mass.

For b:

This is consistent with the theory as atoms of the same element are identical.

For c:

This is consistent with the theory as atoms combine in a simple whole number ratio.

For d:

The statement is inconsistent with the theory as atoms of one element cannot be changed to atoms of other element.

Hence, the correct options are b) and c).

Which general equation shows a double-displacement reaction?


O A. AB + CD + AC + BD
O B. AB → A+B
O C. AB + CD → AD + CB
O D. A+B → AB

Answers

Answer:

O A. AB + CD + AC + BD

explanation:

Explanation:

A.ab+cd+ac+bd is your answer

True or false The atomic number of an element is always more than the mass number of that element.

Answers

The sentence is true

The enthalpy of a reaction is -394 kJ/mol. How would you describe the
reaction?
A. Spontaneous
B. Exothermic
C. Endothermic
D. Nonspontaneous

Answers

Answer:

the reaction is spontaneous

Which of the following units is not an official SI unit?
a) kilogram
b) ampere
c) mole
d) liter

Answers

Answer:

liter

Explanation:

I think liter because it is not listed as a SI unit

Answer:

[tex]{ \bf{d). \: { \tt{litre}}}}[/tex]

cual es el tamaño de partícula del alcohol

Answers

Answer:

Las botellas de alcohol vienen en una variedad de tamaños. El estándar es de 750 ml, que también se conoce como "un quinto" porque es 1/5 de galón. Otros tamaños comunes de botellas de alcohol son 50ml, 100ml, 200ml, 375ml, 1L y 1.75L.

Explanation:

Which refers to substances that are complex molecules and contain carbon atoms bonded to hydrogen atoms?
o
O organic
O inorganic
ionic
metallic

Answers

Answer:

organic

Explanation:

Organic substances are those which contains covalently linked carbon to hydrogen (C-H) bonds in their structure. In other words, organic compounds or substances are uniquely composed of carbon and hydrogen atoms covalently linked together.

These substances usually contain a long chain of these bonds, hence, making them complex. Therefore, according to this question, substanves that are complex molecules and contain carbon atoms bonded to hydrogen atoms are referred to as ORGANIC SUBSTANCES.

Answer:

A. Organic

Explanation:

calculate the mass of solute in 500cm³ of 1.5mol/dm³ sodium hydroxide solution​

Answers

Answer: The general formulae for moles is n=m/mr so now we have being given to find the mass so all we have to do is to change subject

Explanation:  so we have to change subject in this question to m= n× mr . so in the question below we have being given the mole as 1.5mol/dm³  so all we have to do is to find the molecular relative mass(mr) .

to find the molecular relative mass of sodium hydroxide (NAOH) we add all of the atomic masses of all the atoms present so here we have sodium oxygen and hydrogen atoms present.

NA=23 O=16 H=1 so we add 23+16+1=40 so 40 is our molecular relative mass

now we fix it in our formulae which is m=n× mr

m=1.5× 40 =60 so our mass is 60grams or 60g

HOPE THIS HELPS!!!! if i made a mistake our MAY answer may be wrong feel free to comment

can someone do this step by step

Answers

Answer:

No

Can't understand.

Pls follow me and Mark as brainliest Plsssssssss.

Name the following structure:
HOCH2CH2CH2OH

Answers

Answer:

I'm pretty sure this is propanediol

Explanation:

I'm not sure how to explain it, but I believe this is the structure for propanediol. Please let me know if I misunderstood and don't hesitate to reach out with questions!

1,3-propan-diol is the chemical name the given structure: [tex]HOCH_2CH_2CH_2OH[/tex].

Chemical names are orderly systems for classifying and identifying various chemical compounds. They act as a benchmark for international scientific and research communication. For the development of many scientific domains, a standardised nomenclature system for chemicals must be created and adopted. Chemical names, which are made up of a combination of words and symbols, include detailed information on the make-up and structure of a certain substance. They frequently contain constituents, functional groups, and distinct modifiers that aid in describing the compound's varied attributes. 1,3-propan-diol is the chemical name the given structure: [tex]HOCH_2CH_2CH_2OH[/tex].

To know more about chemical name, here:

https://brainly.com/question/30633673

#SPJ6

Which drawing is structural model of C3H8?

Answers

Answer:

option B is the correct answer

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