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
wel
3 years ago
14

Hi......................... HELLO

Chemistry
2 answers:
GREYUIT [131]3 years ago
7 0

Answer:

Hii hello how are you....

PtichkaEL [24]3 years ago
6 0

Answer:

hi

Explanation:

You might be interested in
An unknown solution has a pH of 8. How would you classify this solution?
ratelena [41]
The correct answer is B) Basic. Hope this helps.
6 0
3 years ago
Read 2 more answers
Help! Which of these is a compound?:<br>Carbon, chlorine, uranium, ammonia.
MrRa [10]
Ammonia is the compound.
4 0
3 years ago
Choose the correct name for each acid. Click here
Zigmanuir [339]

Answer:

1. Nitrous Acid

2. Hydroiodic Acid

3. Phosphoric Acid

Explanation:

Just did the lesson

7 0
3 years ago
Read 2 more answers
The two isotopes of chlorine are LaTeX: \begin{matrix}35\\17\end{matrix}Cl35 17 C l and LaTeX: \begin{matrix}37\\17\end{matrix}C
Kay [80]

<u>Answer:</u> The percentage abundance of _{17}^{35}\textrm{Cl} and _{17}^{37}\textrm{Cl} isotopes are 77.5% and 22.5% respectively.

<u>Explanation:</u>

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i   .....(1)

Let the fractional abundance of _{17}^{35}\textrm{Cl} isotope be 'x'. So, fractional abundance of _{17}^{37}\textrm{Cl} isotope will be '1 - x'

  • <u>For _{17}^{35}\textrm{Cl} isotope:</u>

Mass of _{17}^{35}\textrm{Cl} isotope = 35 amu

Fractional abundance of _{17}^{35}\textrm{Cl} isotope = x

  • <u>For _{17}^{37}\textrm{Cl} isotope:</u>

Mass of _{17}^{37}\textrm{Cl} isotope = 37 amu

Fractional abundance of _{17}^{37}\textrm{Cl} isotope = 1 - x

Average atomic mass of chlorine = 35.45 amu

Putting values in equation 1, we get:

35.45=[(35\times x)+(37\times (1-x))]\\\\x=0.775

Percentage abundance of _{17}^{35}\textrm{Cl} isotope = 0.775\times 100=77.5\%

Percentage abundance of _{17}^{37}\textrm{Cl} isotope = (1-0.775)=0.225\times 100=22.5\%

Hence, the percentage abundance of _{17}^{35}\textrm{Cl} and _{17}^{37}\textrm{Cl} isotopes are 77.5% and 22.5% respectively.

6 0
3 years ago
How many moles are in 25.2g of KMnO4?
Zolol [24]
When finding the moles in a compound you have to know the grams. In this case, 25.2 grams are given for KMnO4. To find the moles you would divide the amount of grams by the molar mass of KMnO4. The molar mass of KmnO4 is 158.034. You you would now divide 25.2 by 158.034 which is 0.15946 moles. Depending on how many decimal places the questions asks for is dependent on you. I just went with 5 significant figures. 
4 0
3 years ago
Read 2 more answers
Other questions:
  • Potential energy is based on an objects <br><br> A)gravity<br> B)mass<br> C)position <br> D)kinetic
    9·1 answer
  • In terms of newtons 3rd law of motion desribe this picture.
    14·1 answer
  • Your experiment requires 150 mL of 7.7 M NaOH. How many grams of NaOH will you need?
    8·1 answer
  • Which of the following statements is true about the following reaction?
    15·2 answers
  • How is the orbital configuration of neutral atoms related to the atoms chemical properties
    12·2 answers
  • A sample of the inhalation anesthetic gas Halothane, in a 500-mL cylinder has a pressure of 2.3 atm at 0°C. What will be the pre
    6·2 answers
  • What is the volume of 62.0 g of ether if the density of ether is 0.56 g/mL?
    5·1 answer
  • Concentration data is commonly monitored during a reaction to determine the order with respect to a reactant. Consider the types
    14·1 answer
  • Metric conversion ( convert )
    11·1 answer
  • 1. If 3.2 L of nitrogen monoxide and 4.3 g of oxygen gas are combined, what volume of nitrogen dioxide will be formed? 2NO + 0,
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!