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
Makovka662 [10]
3 years ago
11

The measurement 0.0002833g has how many significant figures?

Chemistry
1 answer:
kherson [118]3 years ago
6 0

Answer:

There are seven significant figures

Explanation:

There are seven different digits within the number. Three 0s, one 2, one 8, and two 3s, adding up to seven different numbers. You exclude the first 0 when the number is a decimal, leaving seven significant figures. Hope this makes sense! :)

You might be interested in
One city is located north of the equator and experiences average rainfall and warm temperatures. Another city is located exactly
antoniya [11.8K]
B I think ..........................
3 0
4 years ago
When 3243. grams of iron (III) chloride are reacted with 511.8 grams of hydrosulfuric acid, which is the limiting reactant?
AleksAgata [21]

Answer:

Hydrosulfuric acid will act as limiting reactant.

Explanation:

Given data:

Mass of iron(III) chloride = 3243.0 g

Mass of hydrosulfuric acid = 511.8 g

Limiting reactant = ?

Solution:

Chemical equation:

2FeCl₃ + 3H₂S       →       Fe₂S₃ + 6HCl

Number of moles of iron(III) chloride:

Number of moles = mass/molar mass

Number of moles = 3243.0 g/ 162.2 g/mol

Number of moles = 20 mol

Number of moles of hydrosulfuric acid:

Number of moles = mass/molar mass

Number of moles = 511.8 g/ 34.1 g/mol

Number of moles = 15 mol

Now we will compare the moles of both reactant with products

                      FeCl₃          :          Fe₂S₃

                       2                :            1

                      20               :          1/2 ×20 = 10

                      FeCl₃          :            HCl

                       2                :              6

                      20               :          6/2 ×20 = 60

                      H₂S             :          Fe₂S₃

                       3                :            1

                      15               :          1/3 ×15 = 5

                      H₂S            :            HCl

                       3                :              6

                      15                :          6/3 ×15 = 30

Hydrosulfuric acid producing less number of moles of product thus, it will act as limiting reactant.

 

5 0
3 years ago
What information is shown in an atom’s electron dot diagram? the number of shells an atom has the number of electrons in each sh
tatiyna
The number of valence electrons an atom has  
4 0
3 years ago
Read 2 more answers
How to find if a bond is a metallic bond?
aleksley [76]

Answer:

A metallic bond will be bonds of just metal atoms sharing their valence electrons

Explanation:

5 0
3 years ago
The following boiling points correspond to the substances listed. Match the boiling points to the substances by considering the
Julli [10]

Answer:

CH₄                                - 162 ⁸C

CH₃CH₃                          -88.5 ⁸C

(CH₃)₂ CHCH₂CH₃         28 ⁸C

CH₃3(CH2)₃CH₃             36 ⁸C

CH₃OH                           64.5 ⁸C

CH₃CH₂OH                     78.3 ⁸C

CH₃CHOHCH₃                82.5 ⁸C

C₅H₉OH                         140 ⁸C

C₆H₅CH₂OH                   205 ⁸C

HOCH₂CHOHCH₂OH    290 ⁸C

Explanation:

To answer this question we need first to understand that for organic compounds:

a. Non polar compounds have lower boiling points than polar ones of similar structure and molecular weight.

b. Boiling points increase with molecular weight.  In alkane compounds if we compare  isomers, the  straight chain isomer will have a higher boiling point than the branched one (s) because of London dispersion intermolecular forces.

a. The introduction of hydroxyl groups increase the intermolecular forces and hence the boiling points because the electronegative oxygen, and, more importantly the presence  of hydrogen bonds.

Considering the observations above, we can match the boiling points as follows:

CH₄                                - 162 ⁸C

CH₃CH₃                          -88.5 ⁸C

(CH₃)₂ CHCH₂CH₃         28 ⁸C

CH₃3(CH2)₃CH₃             36 ⁸C

CH₃OH                           64.5 ⁸C

CH₃CH₂OH                     78.3 ⁸C

CH₃CHOHCH₃                82.5 ⁸C

C₅H₉OH                         140 ⁸C

C₆H₅CH₂OH                   205 ⁸C

HOCH₂CHOHCH₂OH    290 ⁸C

Note: There was a mistake in the symbols used for the  162 and 88.5 values which are negative and correspond to the common gases methane and ethane

7 0
3 years ago
Other questions:
  • Derive the net ionic equation for the reaction between sodium alginate and CaCl2
    9·1 answer
  • Li2SO4 + Cu(NO3)2 = 2LiNO3 + CuSO4. A.)If 1.31g of Li2SO4 reacts with 1.92g of Cu(NO3)2, calculate the theoretical yield (mass)
    9·2 answers
  • 2. Which of the following accurately pairs
    10·1 answer
  • Write and balance the following equation:
    11·1 answer
  • Select the correct answer.
    13·2 answers
  • Which set of coefficients would be needed to balance the chemical equation below?
    8·1 answer
  • Help i have a test coming up
    6·1 answer
  • What is the main characteristics that makes a biome a desert?
    7·1 answer
  • Plz help How many moles are in 3.57 liters of NH3 at STP?
    14·1 answer
  • Which has a positive impact on land
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!