1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maksim [4K]
2 years ago
10

PLEASE HELP I WILL MARK BRAINLIEST!!! Reactions In Our World Lab Report

Chemistry
1 answer:
Cerrena [4.2K]2 years ago
6 0

Answer:

ok

Explanation:

ok

You might be interested in
2. List and explain the three steps for solving a numeric problem.
Charra [1.4K]

Answer:

The steps for solving a numeric word problem are analyze, calculate, and evaluate. To solve a word problem, you must first determine where you are starting from (identify what is known) and where you are going (identify the unknown).

6 0
3 years ago
List some of applications with chemistry in daily life​
Nuetrik [128]

Answer:

while cooking or washing something lol

6 0
2 years ago
What is the mole fraction, X, of solute and the molality, m (or b), for an aqueous solution that is 15.0% NaOH by mass?
GalinKa [24]
Hello!

a) The mole fraction of solute of a 15% NaOH aqueous solution can be calculated in the following way:

First, we have to assume that we have 100 grams of solution. This will simplify the calculations.

Now, we know that this solution has 15 grams of NaOH and 85 grams of water. We can calculate the number of moles of each one in the following way:

molesNaOH= 15 g NaOH*\frac{1molNaOH}{39,997 g NaOH}=0,3750 moles NaOH \\ \\ moles H_2O=85 gH_2O* \frac{1 mol H_2O}{18 g H_2O}=4,7222 moles H_2O

To finish, we calculate the mole fraction by dividing the moles of NaOH between the total moles:

X_{NaOH}= \frac{moles NaOH}{total moles}= \frac{0,3750 moles NaOH}{0,3750 moles NaOH+4,7222 molesH_2O} =0,073

So, the mole fraction of NaOH is 0,073

b) The molality (moles NaOH/ kg of solvent) of a 15% NaOH aqueous solution can be calculated in the following way:

First, we have to assume that we have 100 grams of solution. This will simplify the calculations.

Now, we know that this solution has 15 grams of NaOH and 85 grams (0,085 kg) of water. We can calculate the moles of NaOH in the following way:

molesNaOH= 15 g NaOH*\frac{1molNaOH}{39,997 g NaOH}=0,3750 moles NaOH

Now, we apply the definition of molality to calculate the molality of the solution:

mNaOH= \frac{moles NaOH}{kg_{solvent}}=  \frac{0,3750 moles NaOH}{0,085 kg H_2O}=4,41 m

So, the molality of this solution is 4,41 m

Have a nice day!
4 0
3 years ago
What organizations provides help to friend and family alcoholics
joja [24]

Answer:

Alateen

Explanation:

5 0
3 years ago
Read 2 more answers
In the treatment of domestic water supplies, chlorine is added to the water to form chloric(I) acid,HClO.
Naya [18.7K]
Chlorine goes from Cl₂ to ClO⁻.

Oxidation state of Cl in Cl₂ is zero whereas in ClO⁻ it is +1. Hence change in oxidation state of Chlorine is 1.

Calculation of oxidation number of Cl in ClO⁻ or HClO⁻ :
Let x be oxidation number of Cl in ClO⁻ the. Now since the net charge on ClO⁻ is -1, sum of oxidation number of all must be equal to -1. 


Therefore,
x + (-2) = -1 .....[ oxidation number of O is -2]
∴ x = 2-1 = +1
Therefore oxidation number of Cl in ClO⁻ is +1

8 0
3 years ago
Other questions:
  • How many chlorine molecules are in 35.5g of chlorine gas
    8·1 answer
  • 1. For each of the molecules below, determine the electron geometry, molecule geometry, and bond
    9·1 answer
  • Who is allowed to go into a crime scene after its released?
    8·1 answer
  • How many molecules are in 5.55 moles of water, H,O?​
    5·1 answer
  • What Can You Tell About The Shape Of The Compound Made Of Magnesium & Nitrogen ?
    14·1 answer
  • In recent research, strontium ions have been used for bone regeneration within humans as a calcium replacement. Based on your kn
    11·1 answer
  • How is sound produced?
    14·2 answers
  • Substances have a fixed arrangement of atoms. true or false (NO LINKS PLEASE)
    5·1 answer
  • A gas with 4.0 atmospheres of pressure has a temperature of 27°C.
    12·1 answer
  • I need help with Chemistry: Mole Conversion<br> It must be answered in complete detail
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!