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
AlexFokin [52]
3 years ago
12

The height of a building is 31.0 meters.how tall is the building in kilometers?

Chemistry
1 answer:
Sonja [21]3 years ago
5 0
To find the answer, you would use Dimensional Analysis, as follows:

31 meters *  \frac{1 kilometer}{1000 meters} = 0.031 kilometers
You might be interested in
Deforestation typically
harkovskaia [24]
<span>B. increases erosion in an area</span>
8 0
3 years ago
Which bonds are found inside a water molecule, between hydrogen and oxygen?
Papessa [141]
Hydrogen bond is found between water molecule if im correct
5 0
3 years ago
What is the law of reciprocal proportion​
irina [24]

If two different elements combine separately with a fixed mass of a third element, the ratio of the masses in which they do so are either the same as or a simple multiple of the ratio of the masses in which they combine with each other.

7 0
3 years ago
How many grams of Ni are formed from 55.3 g of Ni2O3?<br><br> 2Ni2O3(s)⟶4Ni(s)+3O2(g)
Neko [114]

Answer:

39.2 g

Explanation:

  • 2Ni₂O₃(s) ⟶ 4Ni(s) + 3O₂(g)

First we <u>convert 55.3 grams of Ni₂O₃ into moles of Ni₂O₃</u>, using its<em> molar mass</em>:

  • 55.3 g ÷ 165.39 g/mol = 0.334 mol Ni₂O₃

Then we <u>convert 0.334 moles of Ni₂O₃ into moles of Ni</u>, using the <em>stoichiometric coefficients of the balanced reaction</em>:

  • 0.334 mol Ni₂O₃ * \frac{4molNi}{2molNi_2O_3} = 0.668 mol Ni

Finally we <u>calculate how much do 0.668 Ni moles weigh</u>, using the<em> molar mass of Ni </em>:

  • 0.668 mol Ni * 58.69 g/mol = 39.2 g
7 0
3 years ago
What are atoms made of
navik [9.2K]
Protons, nuetrons, and electrons

3 0
3 years ago
Other questions:
  • The standard heat of formation of a branched alkane is -35 kcal/mol; the standard heat of formation of the unbranched version of
    13·1 answer
  • Calculate the freezing point and boiling point of a solution containing 7.70 g of ethylene glycol (C2H6O2) in 89.8 mL of ethanol
    5·1 answer
  • As the vibration of molecules increases, the _____ of the substance increases.
    8·1 answer
  • If a wave produced by a fireworks explosion is that light wave or sound wave
    8·2 answers
  • Group A exercises for a month. Group B does not exercise. They measure the amount of weight they gained at the end of the month.
    15·2 answers
  • 11. The Ka for benzoic acid is 6.5 × 10–5. Calculate the pH of a 0.10 M benzoic acid solution.
    15·1 answer
  • For the reaction H2(g) + 12(g) = 2HI(g), Kc = 50.2 at 445°C. If
    9·1 answer
  • Please help me I need these answers
    5·1 answer
  • O1S. Answer the following questions using Boyle's law:
    8·1 answer
  • How is an echo formed?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!