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
JulijaS [17]
2 years ago
7

If you have a 100g of Boron and you want to find out how

Chemistry
1 answer:
Dmitry [639]2 years ago
7 0

Answer:

5.57 x 10^24 atoms

Explanation:

first, you are seeking the number of ATOMS of Boron.

Boron has an Atomic mass of 10.8 g/mol (see #5 on the periodic table)

100 gm of Boron would have 100 g /10.8 g/mol =9.26 moles

each mole has Avogadros number of atoms 6.02 x 10^23

9.26 moles has 9.26 x 6.02 x 10^23 atoms =5.57 x 10^24 atoms

You might be interested in
Please help me balance:<br>_NaNO3 + _PbO_ ➡️ Pb(NO3)2 + _Na2O
KengaRu [80]

Answer:

The balanced reaction is given by,

2NaN(O)3 + PbO ⇒ Pb(NO3)2 + Na2O

Explanation:

The reaction is as given.

Lets count the number of each elements in the reaction.

<em>In reactant side, number of sodium atoms are 1 , lead are 1, nitrogen are 1 and oxygen are 4.</em>

<em>in product side, number of sodium atoms are 2 , lead are 1 , nitrogen are 2 and oxygen are 7.</em>

<em>So we need to balance sodium and oxygen atoms in the reaction.</em>

<em>There is deficient of sodium and oxygen atoms on reactant side</em>.

Thus, multiply (NaNO3) by 2.

<em>Thus, sodium atoms become 2 , nitrogen 2 and oxygen 6. Total 7 oxygen atoms.</em>

Thus, the balanced reaction is,

2NaN(O)3 + PbO ⇒ Pb(NO3)2 + Na2O

7 0
2 years ago
Help Plz 20 points -------------
Arturiano [62]

Answer:

B

Explanation:

Compounds are made up of 2 or more different atoms that bond to form a compound.

4 0
2 years ago
Read 2 more answers
Would an opah fish be better suited to live in cold water or warm water? explain why
Kaylis [27]

Don't blame me if you get it wrong i'm a dumb but yet successful student

Warm blood gives deep-sea fish a boost, according to Wegner. The opah's muscles and nervous system likely function faster than an equivalent fish with cold blood. ... This fish, the southern opah, lives in colder waters than the northern opah, so it would be harder to keep warm, Wegner said — but even more beneficial.

4 0
3 years ago
A compound has a molar mass of 26g/mol and an empirical formula of CH. What is the molecular formula?
WINSTONCH [101]
The formula is D. C2H2
4 0
3 years ago
“Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil a
jekas [21]
The correct answer is letter a. distillation of a mixture. “Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil ataround 370°C," It is the process of DISTILLATION OF A MIXTURE.Here is the question.
<span>
What topic is the teacher most likely talking about?
a. distillation of a mixture
b. filtration of a pure substance
c.evaporation of a mixture
d. sorting of a pure substance</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate number of grams in 1.15*10^21 molecules of P2O5
    15·1 answer
  • How many covalent bonds does carbon form in neutral compounds?
    8·1 answer
  • What would barium do to obtain a noble gas structure
    11·1 answer
  • Potassium chlorate decomposes according to the following chemical equation:
    8·2 answers
  • The nucleus of a certain atom has seventeen protons and eighteen neutrons. how many electrons does the atom have?
    10·1 answer
  • Answer EIGHT questions.
    11·1 answer
  • What's the formula for bisonium dingodie chemical
    6·1 answer
  • What properties are associated with metals (grade 9 science)
    6·1 answer
  • 10 divided by 2 im confused
    10·2 answers
  • What’s the star made up of challenge?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!