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
vlabodo [156]
3 years ago
14

In atomic mass units, what is the average atomic mass of the atoms that make up boron (B)?

Chemistry
1 answer:
Annette [7]3 years ago
5 0
Atomic mass is the decimal number that is on the periodic table...

Boron's atomic mass is 10.81
You might be interested in
(Please answer as quickly as possible for brainliest, thanks :))
Eddi Din [679]
A. actinides do not occur in nature.
4 0
3 years ago
Read 2 more answers
A 25.0 mL sample of a solution of an unknown compound is titrated with a 0.115 M NaOH solution. The titration curve above was ob
Mnenie [13.5K]

Answer:

Weak acid

Explanation:

A titration curve is a graphical description of the change in pH of the solution in the conical flask as the reagent is added from the burette. A titration curve can be plotted for the different kinds of acid and base titrations. The volume of the titrant is always plotted as the independent variable and the pH of the solution as the dependent variable. The equivalence point is read off from the titration curve. A titration curve is very important because it shows the pH at various points during the titration.

A weak acid/strong base titration leads to an equivalence point above 7. From the question, we were told that the pH at equivalence point lies around 8. Hence the unknown substance must be a weak acid.

3 0
3 years ago
Which substance can not be broken down by a chemical change?
frosja888 [35]
(4) Zirconium 
This element is often used in the chemical production field, and as implants due to its high chemical resistance and stability. 
8 0
3 years ago
Mercury(II) oxide (HgO) decomposes to form mercury (Hg) and oxygen (O2). The balanced chemical equation is shown below.
IceJOKER [234]
2HgO=2Hg + O2
433,18 g. = 32 g
x. = 250 g
x= 3 384,21875 g of HgO is needed
4 0
3 years ago
What makes a substance pure?
Norma-Jean [14]

Answer: When a substance is pure, it is composed of one type of molecule. For example, table salt is only composed of (more or less) salt molecules, while seawater has water and salt molecules. A more complicated example of a non - pure substance is soil. It has many different types of nutrients and compounds.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Write a summary of a toms​
    10·1 answer
  • How many moles of sucrose (C12H22O11) would be in 8.7 L of a 1.1 M solution of sucrose?
    12·1 answer
  • What is the main difference between protons and neutrons
    6·2 answers
  • Which of the following is NOT a trait of gases ?
    5·2 answers
  • NEED HELP DESPERATELY!!!
    14·2 answers
  • (URGENT!!!!!) the electron configuration of some elements are given. Based on the electron configuration which ELEMENTS can like
    14·1 answer
  • Determine The Oxidation Number for
    13·1 answer
  • If a frog has 26 chromosomes in its body cells, then it must have ______ cells in its gametes
    15·1 answer
  • While a sample of liquid is freezing, its thermal energy
    12·2 answers
  • Fill in the blanks to complete each statement about the heating of Earth's surface.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!