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
ehidna [41]
3 years ago
15

Unknown # 41

Chemistry
1 answer:
Semmy [17]3 years ago
3 0
Answer: Potassium Iodide, KI

Explanation:

Flame test colors:

Li+ = Crimson Red
Na+ = Bright Orange-Yellow
K+ = Lilac

Addition of nitric acid and silver nitrate (HNO3 and AgNO3),

Cl- = White precipitate
Br- = Creamy precipitate
I- = Yellow Precipitate

Hope this helps, brainliest would be appreciated :)
You might be interested in
Americans eat too much salt (NaCl). A healthy adult should eat no more than 6 g of salt in one day. Use this information to answ
Rufina [12.5K]

Answer:

a. 58.5 g/mol

b. 0.1 mol

Explanation:

a.

The molar mass of Na is 23.0 g/mol. The molar mass of Cl is 35.5 g/mol. The molar mass of NaCl is:

M(Na) + M(Cl) = 23.0 g/mol + 35.5 g/mol = 58.5 g/mol

b. A healthy adult should eat no more than 6 g of salt in one day. The moles corresponding to 6 g of NaCl are:

6 g × (1 mol/58.5 g) = 0.1 mol

7 0
3 years ago
A student titrates 10.00 milliliters of hydrochloric acid of unknown molarity with 1.000 m naoh. it takes 21.17 milliliters of b
Dima020 [189]
Mole ratio for the reaction is 1:1
no of moles in NaOH that reacted= 1*21.17/1000=0.02117mols
 molarity of HCl=0.02117*10/1000
                         =2.117M
4 0
3 years ago
127) Thirty-six colonies grew in nutrient agar from 1.0 ml of undiluted sample in a standard plate count. How many cells were in
SIZIF [17.4K]

Answer:

36

Explanation:

Since the sample was undiluted the number of colonies is the number that grew on the nutrient agar which is 36 colonies. If it was diluted for example let say 0.1 ml from a dilution in which 1 ml of the sample was added to 9 ml of water, and it grew  colonies then  0.1 ml  yielded  6 colonies, 1 ml of the diluted sample will yield 60 colonies and 10 ml will have 600 colonies and therefore the 1 ml undiluted sample will have 600 colonies.

6 0
3 years ago
An indicator helps us to see the _____ during a titration experiment by causing a color change
Liula [17]

Answer:

Point of neutralization.

Explanation:

Indicators are used in titration experiments to show when the solution's pH is changing. For instance, a common indicator, phenolphthalein, turns pink in basic solutions, while it remains colorless in acidic solutions. The solution would turn a very light shade of pink when the pH reached above 7.

5 0
3 years ago
Determine what forces are present in this situation : an elevator is rising at a constant speed; the elevator is the object in t
alexandr1967 [171]
The correct answer for the given question would be option A. The forces that are present in the given situation above which is an elevator rising at a constant speed, are gravity and tension. Gravity is the force that pulls all matter together. Tension is the <span>pulling force transmitted axially. Hope this is the answer that you are looking for.</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • Which molecule is a saturated fat ?
    14·2 answers
  • Given 65 g of C3 H8 and 65 g of O2, what is the theoretical yield of CO2 in grams
    6·1 answer
  • Does the bowling ball have more potential energy or kinetic energy as it is halfway through its fall? Why?
    9·1 answer
  • A 5.325g sample of methyl benzoate, a compound in perfumes , was found to contain 3.758 g of carbon, 0.316 g of hydrogen, and 1.
    6·1 answer
  • what kind of evidence indicates a chemical change ?... a physical change? you may use examples to show softened.
    13·1 answer
  • How many moles of helium are 8.84×10^24 atoms of He?
    9·1 answer
  • Rank each of the following gases in order of increasing urms assuming equivalent amounts and all gases are at the same temperatu
    13·1 answer
  • 22.17 grams of Mercury (II) Nitrate, Hg(NO3)2, reacts with an excess of Potassium, K.
    9·1 answer
  • What information about a molecule can you determine from its<br> chemical formula?
    12·1 answer
  • Determine the name for aqueous H2CO3. carbonous acid dihydrogen carbonate carbonic acid hydrocarbonic acid hydrocarbide acid
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!