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
monitta
3 years ago
10

Which of the following statements is a qualitative observation? A.The branch is three meters long. B.The substance tastes bitter

. C.There are eleven students absent. D. The beaker contains four hundred milliliters of an unknown liquid.
Chemistry
1 answer:
notka56 [123]3 years ago
7 0

There are two kinds of analysis: qualitative and quantitative

In quantitative we analyse the amount of something that is how much of something is present / the quantity. Ex: the length of branch of tree, number of students in class, volume of a liquid in a beaker.

In qualitative analysis we determine the kind of substance / quality of substance / nature of substance.

like: colour of a substance, odor of a substance or taste (bitter / sour / sweet etc) of a substance

So answer is : B.The substance tastes bitter

You might be interested in
Suppose a solution was too concentrated for an accurate reading with the spectrophotometer. The concentrated solution was dilute
yan [13]
Using the law of <span>dilution:

</span>initial Molarity = 3.5x10⁻⁶ M

<span>Initial volume = 4.00 mL
</span>
final Molarity = ??

final volume = 1.00 mL

Therefore:

Mi x Vi = Mf x Vf

(3.5x10⁻⁶) x 4.00 = Mf x 1.00

1.4x10⁻⁵ = Mf x 1.00

Mf = 1.4x10⁻⁵ / 1.00 = 

 1.4x10⁻⁵ M 


5 0
3 years ago
A binary molecule consists of how many atoms?<br> O1<br> 02<br> 3<br> 4
krek1111 [17]

Answer:

2

Explanation:

BIonary bi means 2

i hope this helps :)

3 0
2 years ago
The solutions that are mixed contain agno3 and nacl. What two products can be formed by exchange of the ions from these two reac
anastassius [24]

Answer:

NaNO₃ and AgCl are the two products that can be formed.

Sodium nitrate, an aqueous solution and a solid silver chloride (precipitate)

Explanation:

We determine the dissociation of both salts

AgNO₃ (aq) → Ag⁺ (aq) + NO₃⁻ (aq)

NaCl (aq) →  Na⁺ (aq) + Cl⁻ (aq)

We make the ionic equation:

Ag⁺ (aq) + NO₃⁻ (aq) + Na⁺ (aq) + Cl⁻ (aq) → NaNO₃(aq) + AgCl (s) ↓

6 0
3 years ago
If a mineral is opaque, lustrous, malleable, and can conduct heat and electricity, it is a(n) ________. A) element B) gemstone C
bulgar [2K]

Answer:

If a mineral is opaque, lustrous, malleable, and can conduct heat and electricity, it is a "Metal"

D) Metal

6 0
2 years ago
Jesse is riding the bus home from school. He is moving away at 30 miles per hour. From which reference point would this descript
NISA [10]

Answer:

the correct answer is going to be the school

6 0
1 year ago
Other questions:
  • Explain how electromagnetic waves are produced
    10·2 answers
  • Elements and compounds are more similar to each other than they are to mixtures because:
    7·1 answer
  • You have a pound of feathers and a pound of lead:
    7·2 answers
  • The ground-state electron configuration for an element contains an unpaired 3s electron.
    10·1 answer
  • When elements form bonds, it changes their ______ properties.<br>The answer is..? ​
    11·1 answer
  • Identify the types of information that are necessary to communicate with emergency responders. Select one or more: Any chemicals
    15·1 answer
  • Name the parts of a chemical reaction, and describe both
    14·1 answer
  • Where do the letters go help me plz​
    8·2 answers
  • If something has more mass does it mean it has more atoms?
    10·1 answer
  • 4. How many grams of hydrogen is produced from 12.5 g of Mg reacting with hydrochloric acid in this
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!