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
lapo4ka [179]
3 years ago
13

Which of the following would be a qualitative observation? A The volume of the solution is 25 ml B The solution turned blue C Th

e solution has a density of 1.52 g/ml D The solution has a pH of 8
Chemistry
1 answer:
mariarad [96]3 years ago
3 0
B

A qualitative observation describes the characteristics of a substance without quantifying them.
You might be interested in
Describe how transpiration and respiration show interactions among Earth's system
stepladder [879]

Earth has 4 systems/ spheres which are known as Lithosphere(land), Biosphere(living things), Hydrosphere(water) and Atmosphere(air).

Transpiration is the process that interact with the Hydrosphere and Respiration is the process that interacts with the Atmosphere.

Transpiration is the process happening in plants which absorb and distribute water through their roots and release water in the form of vapors through their leaves. As this process involves Water, therefore this process interacts with the Hydrosphere.  

Respiration is the process in which plants convert carbon dioxide to oxygen as a part of photosynthesis which was then inhaled by the animals. As this process involves Air, therefore this process interacts with the Atmosphere.

7 0
3 years ago
Read 2 more answers
What is the maximum number of d orbitals in a principal energy level?
Alenkasestr [34]
The maximum number of D orbitals in a principal energy level is 5.
7 0
3 years ago
Read 2 more answers
230g sample of a compound contains 136.6g carbon, 26.4g hydrogen, and 31.8g nitrogen. What is masspercentif oxygen
natulia [17]

Answer:

15.3 %

Explanation:

Step 1: Given data

  • Mass of the sample (ms): 230 g
  • Mass of carbon (mC); 136.6 g
  • Mass of hydrogen (mH): 26.4 g
  • Mass of nitrogen (mN): 31.8 g

Step 2: Calculate the mass of oxygen (mO)

The mass of the sample is equal to the sum of the masses of all the elements.

ms = mC + mH + mN + mO

mO = ms - mC - mH - mN

mO = 230 g - 136.6 g - 26.4 g - 31.8 g

mO = 35.2 g

Step 3: Calculate the mass percent of oxygen

%O = (mO / ms) × 100% = (35.2 g / 230 g) × 100% = 15.3 %

6 0
3 years ago
A sample of 17.0 M concentrated H2SO4 stock solution with a volume of 25.0 cm3 was diluted to final concentration of 5.0 M H2SO4
Art [367]

Answer:

60 cm³ of water

Explanation:

We'll begin by calculating the volume of the diluted solution. This can be obtained as follow:

Concentration of stock solution (C₁) = 17 M

Volume of stock solution (V₁) = 25 cm³

Concentration of diluted solution (C₂) = 5 M

Volume of diluted solution (V₂) =?

C₁V₁ = C₂V₂

17 × 25 = 5 × V₂

425 = 5 × V₂

Divide both side by 5

V₂ = 425 / 5

V₂ = 85 cm³

Thus, the volume of the diluted solution is 85 cm³

Finally, we shall determine the volume of water needed to dilute the solution. This can be obtained as follow:

Volume of stock solution (V₁) = 25 cm³

Volume of diluted solution (V₂) = 85 cm³

Volume of water =?

Volume of water = V₂ – V₁

Volume of water = 85 – 25

Volume of water = 60 cm³

Therefore, 60 cm³ of water is needed to dilute the solution.

6 0
2 years ago
In a chemical reaction , atoms are created/rearranged. The atom are joined together in the same/different arrangements after the
Paul [167]

Answer:

I think these are the answers:

Explanation:

created/rearranged

same/different

greater/less/same

4 0
3 years ago
Other questions:
  • When you exercise, the burning sensation that sometimes occurs in your muscles represents the buildup of lactic acid (HC3H5O3).
    7·1 answer
  • Density is an intensive physical property because the density of a given substance does not change with the size of the sample.
    8·1 answer
  • Suggest a pH value for lemonade
    13·1 answer
  • Part of making comparisons involves contrasting unlike characteristics.
    11·2 answers
  • What is the number of electrons in silicon-30
    9·2 answers
  • Explain the following observation. Treatment of alkyl chloride A with NaOCH2CH3 yields only one product B, whereas treatment of
    6·1 answer
  • Help fast! i rlly need help pls :(
    13·2 answers
  • The number 0.0007270 is larger than the number 5.7 × 10–3.
    15·1 answer
  • Hello again. Image is below
    10·1 answer
  • Which of the following statements is NOT
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!