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
svetlana [45]
2 years ago
6

How could having a knowledge of density be useful in everyday life 

Chemistry
2 answers:
MA_775_DIABLO [31]2 years ago
6 0
Most people cook everyday you use a measuring cup to measure liquids and solids or powders. You use density when filling a glass of water if your dehydrated which glass do you choose the large cup or the small cup.
aleksklad [387]2 years ago
5 0
Density is found in everyday objects.
You might be interested in
#11 plz help must need would appreciate it
mario62 [17]

Explanation:

325 g HgO

your answer

please mark as brilliant

7 0
3 years ago
A mixture of calcium carbonate, CaCO3, and barium carbonate, BaCO3, weighing 5.40 g reacts fully with hydrochloric acid, HCl(aq)
amid [387]

Answer:

CaCO₃ = 85.18%

BaCO₃ = 14.82%

Explanation:

The acid will react with the salts, the partial reactions are:

CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O

BaCO₃ + 2HCl → BaCl₂ + CO₂ + H₂O

So, the total amount of CaCO₃ BaCO₃ will form the CO₂.

Using the ideal gas law to calculate the number of moles of CO₂:

PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant (0.082 atm*L/mol*K), and T is the temperature (50ºC + 273 = 323 K).

0.904*1.39 = n*0.082*323

26.486n = 1.25656

n = 0.05 mol

So, the number of moles of the mixture is 0.05 mol.

The molar masses of the components are:

CaCO₃ = 40 g/mol of Ca + 12 g/mol of C + 3*16 g/mol of O = 100 g/mol

BaCO₃ = 137.3 g/mol of Ba + 12 g/mol of C + 3*16 g/mol of O = 197.3 g/mol

Let's call x the number of moles of CaCO₃ and y the number of moles of BaCO₃, so:

100x + 197.3y = 5.4

x + y = 0.05 mol

y = 0.05 - x

100x + 197.3*(0.05 - x) = 5.4

100x - 197.3x = 5.4 - 9.865

97.3x = 4.465

x = 0.046 mol of CaCO₃

y = 0.004 mol of BaCO₃

So, the masses are:

CaCO₃ = 100* 0.046 = 4.60 g

BaCO₃ = 137.3*0.004 = 0.80 g

The percentages in the mixture are:

CaCO₃ = (4.60/5.40)*100% = 85.18%

BaCO₃ = (0.80/5.40)*100% = 14.82%

4 0
2 years ago
What are some ways that propane, butane, gasoline, diesel, and kerosene can be compared?
Whitepunk [10]

Answer:

Propane and butane are pure substances, which means that each one of them is made of only one type of molecule—propane molecules or butane molecules. In contrast, gasoline, diesel, and kerosene are not pure substances; they are mixtures of more than one substance.

Explanation:

Hope it is helpful...

4 0
2 years ago
Which two cities are located in the Erie Ontario Lowlands?
Leya [2.2K]
New york city and river head .
6 0
3 years ago
One of the pieces of evidence supporting energy quantization was the line spectra of elements. Why does this demonstrate energy
bezimeni [28]

Answer:

c) There are sharp emission lines demonstrating discrete energy levels.

Explanation:

When an element emits energy in the form of radiation, it produces a spectrum of colors on a photographic plate. This spectrum can either be continuous or discrete. In continuous spectrum the spectrum continues without any discrimination between two regions. This represents the continuous emission of radiation, and thus the continuous emission of energy without any break.

On the other hand, the line spectrum consists of discrete and sharp lines, which shows the emission of radiation in a certain amount in a certain time, with a break between emission. Hence, the line spectra supports the quantization of energy.

The correct option is:

<u>c) There are sharp emission lines demonstrating discrete energy levels.</u>

8 0
3 years ago
Other questions:
  • Determine whether each of these reactions occur through an S N 1 , S N 2 , E1, or E2 mechanism. A. A tertiary alkyl halide is tr
    14·1 answer
  • Definition of science method
    9·1 answer
  • Can you subscribe to me on yt my channel is BigBoss Games
    13·1 answer
  • The initial temperature of three moles of oxygen gas is 32.5°C, and its pressure is 6.60 atm. (a) What will its final temperatur
    6·1 answer
  • In what other planets did differentiation occur?
    10·1 answer
  • ILL GIVE BRAILNEST!!!!! PLZ HELP ME FAST
    8·1 answer
  • How does the emission spectrum support the idea of quantized energy levels
    10·1 answer
  • Help PLEASE ill give Brainiest
    9·2 answers
  • Can someone help me like please
    10·1 answer
  • Please help quick<br> Alkali means ___.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!