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
storchak [24]
3 years ago
14

Which of the following examples illustrates a number that is correctly rounded to three significant figures? Which of the follow

ing examples illustrates a number that is correctly rounded to three significant figures?a. 109,526 grams to 109 500 gramsb. 103.692 grams to 103.7 gramsc. 0.03954 grams to 0.040 gramsd. 4.05438 grams to 4.054 gramse. 20.0332 grams to 20.0 grams
Chemistry
1 answer:
Alex3 years ago
6 0

Answer:

20.0332 grams to 20.0 grams

Explanation:

You might be interested in
Calculate the molarity of the two solutions.
daser333 [38]

1. 0.33 M

2. 0.278 M

<h3>Further explanation</h3>

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

1. 0.350 mol of NaOH in 1.05 L of solution.

n=0.35

V=1.05 L

Molarity :

\tt M=\dfrac{0.35}{1.05}=0.33

2. 14.3 g of NaCl in 879 mL of solution.

mol NaCl(MW=58.5 g/mol) :

\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{14.3~g}{58.5~g/mol}=0.244

Molarity :

\tt M=\dfrac{0.244}{0.879~L}\\\\M=0.278

4 0
3 years ago
NEED HELP FAST I WILL MARK BRAINLIEST AND THANK YOU AND RATE 5 STARS.
sleet_krkn [62]
Hello there,

All compounds of carbon are made by <span>ionic bonding.

I Hope this helps.

~Jurgen</span>
5 0
3 years ago
Read 2 more answers
Arrange the following ions in order of increasing ionic radius.
Zepler [3.9K]

Answer:

Ca 2+ <K  +  <Ar<Cl  −  <S  2−

Explanation:

Ar,K  + ,Cl  − ,S  2− ,Ca  2+

 have the same number of electrons. Their radii would be different because of their different nuclear charges. The cation with the greater positive charge will have a smaller radius because of the greater attraction of the electrons to the nucleus. Anion with the greater negative charge will have the larger radius. In this case, the net repulsion of the electrons will outweigh the nuclear charge and the ion will expand in size. Hence the correct order will be Ca  

2+  <K +  <Ar<Cl  −  <S  2−

 

3 0
3 years ago
The atomic number of an atom is always equal to the number of its what ??
Marianna [84]
The answer is protons and electrons! Hope this helps :D
3 0
3 years ago
Read 2 more answers
Options are upper left upper right bottom left bottom right for both problems please help!
polet [3.4K]

Answer:

(upper right) corner of the periodic table to the bottom left corner

6 0
3 years ago
Other questions:
  • The chart shows four environments and the kind of succession that would occur there.
    5·2 answers
  • Mechanical waves are classified according to
    9·1 answer
  • The molar mass of magnesium fluoride is?
    5·1 answer
  • Find the density of a sample with a mass of 2.56 g and a volume of
    13·1 answer
  • Scientists are studying different jackets made for extremely cold, snowy weather. They are trying to find jackets
    13·1 answer
  • FREE POINTS no question
    7·2 answers
  • Lithium, sodium and potassium are all in group 1 of the periodic table. Which of these has the lowest boiling point?
    10·1 answer
  • 2. Why do ions form?
    13·2 answers
  • What does a nonpolar covalent bond show about the electronegativities of its
    13·1 answer
  • In general for main-group elements, atomic size _____ from left to right across a period and _____ down a group.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!