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
Anna007 [38]
2 years ago
11

A man can walk at a speed of 20 mi/day. How far will he walk in 5 days?

Chemistry
2 answers:
dybincka [34]2 years ago
8 0

Answer:

100 miles

Explanation:

20 miles = 1 day

to find 5 multiply both numbers by 5

100 miles = 5

k0ka [10]2 years ago
5 0

Answer:

100 mi

Explanation:

if he walks 20 mi a day and we're determining how far he'll walk in 5 days then 5 x 20 = 100

You might be interested in
I NEED HELP WITH NUMBER 3
vesna_86 [32]
The C stands for Specific Heat
8 0
3 years ago
Balance this equation: CH4 +2O2--------> ___ CO2 + ___ H2O
Lubov Fominskaja [6]

Answer:

b-1 CO2+ 2H2O

5 0
3 years ago
In the titration of HCl with NaOH, the equivalence point is determined
kondaur [170]

Answer:

In the titration of HCl with NaOH, the equivalence point is determined from the point where the phenolphthalein turns pink and then remains pink on swirling.

Explanation:

The equivalence point is the point at which exactly enough titrant (NaOH) has been added to react with all of the analyte (HCl). Up to the equivalence point, the solution will be acidic because excess HCl remains in the flask.

Phenolphtalein is chosen because it changes color in a pH range between 8.3 – 10. Phenolphthalein is naturally colorless but turns pink in alkaline solutions. It remains colorless throughout the range of acidic pH levels, but it begins to turn pink at a pH level of 8.3 and continues to a bright purple in stronger alkalines.

It will appear pink in basic solutions and clear in acidic solutions.

The more NaOH added, the more pink it will be. (Until pH≈ 10)

In strongly basic solutions, phenolphthalein is converted to its In(OH)3− form, and its pink color undergoes a rather slow fading reaction and becomes completely colorless above 13.0 pH

a. from the point where the pink phenolphthalein turns colorless and then remains colorless on swirling.

⇒ the more colorless it turns, the more acid the solution. (More HCl than NaOH)

b. from the point where the phenolphthalein turns pink and then remains pink on swirling.

The equivalence point is the point where phenolphtalein turns pink and remains pink ( Between ph 8.3 and 10). (

Although, when there is hydrogen ions are in excess, the solution remains colorless. This begins slowely after ph= 10 and can be noticed around ph = 12-13

c. from the point where the pink phenolphthalein first turns colorless and then the pink reappears on swirling.

Phenolphthalein is colorless in acid solutions (HCl), and will only turn pink when adding a base like NaOH

d. from the point where the colorless phenolphthalein first turns pink and then disappears on swirling

Phenolphthalein is colorless in acid or neutral solutions. Once adding NaOH, the solution will turn pink. The point where the solution turns pink, and stays pink after swirling is called the equivalence point. When the pink color disappears on swirling, it means it's close to the equivalence point but not yet.

3 0
2 years ago
A glow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produ
mina [271]

A glow stick will glow longer at lower temperatures than at room temperature, one can infer from the observation. Temperature and reaction time are the test variables.

We notice in this reaction that a glow stick stored in the freezer lights for a longer period of time than a glow stick stored at normal temperature. This implies that temperature affects how long a response lasts.

The most straightforward explanation for this observation is that glow sticks glow longer in colder temperatures than they do at room temperature; as a result, glow sticks kept in the freezer are observed to glow longer than glow sticks kept at room temperature.

To learn more about chemicals to the given link:

brainly.com/question/24600141

#SPJ4

6 0
1 year ago
What two types of particles exist within an atomic nucleus?
MissTica
Protons and Neutrons, the electrons circle around the nucleus.
Hope this Helps!
6 0
3 years ago
Other questions:
  • What best describes the dropping height of a ball that bounced back up to a height of 45 centimeters?
    11·1 answer
  • Definition for outcome variable
    7·1 answer
  • What is the overall effect of adding a solute to a Solution
    8·1 answer
  • The__ contains all the elements l, arranged according to similarities in their properties​
    11·1 answer
  • DNA Mutations
    13·1 answer
  • When she introduced CO(g) and Cl2(g) into a 1.00 L evacuated container, so that the initial partial pressure of CO was 1.86 atm
    14·1 answer
  • What causes a change in air pressure
    15·1 answer
  • HELP HURRY‼️‼️‼️<br> FAST
    15·2 answers
  • True or false Carbohydrates and proteins have the same caloric value per gram
    8·1 answer
  • Which describes the characteristics of a rain shadow on a mountainside?(1 point)
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!