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
erica [24]
3 years ago
5

If a measurement is said to be precise this means that it is what​

Chemistry
2 answers:
Drupady [299]3 years ago
7 0

Answer:

See below.

Explanation:

A precise measurement means that in a repetition of an  experiment the results are all very close. Note precise is not always the same as accurate. If there is say 32.0% of lead in a sample of lead ore and 2 analyses  give results of 31.92% and 31.93% they are very precise, but if another 2 analyses give results of  31.95% and 32,05% they are less precise but more accurate.

Gala2k [10]3 years ago
6 0

On point? Do you have any options?

You might be interested in
15 POINTS!! does anyone know the answer to this? is it A?
Norma-Jean [14]

Answer:

b.2

Explanation:

7 0
2 years ago
Read 2 more answers
what happens if you fail a quarter in high school, does that credit not count anymore ? and do i have to retake the class if i p
vampirchik [111]
No if you pass the rest you will not have to retake the credit trust me i know
6 0
3 years ago
When NH3(g) reacts with N2O(g) to form N2(g) and H2O(g), 105 kcal of energy are evolved for each mole of NH3(g) that reacts. Wri
Ganezh [65]

Answer : The balanced chemical equation is,

2NH_3(g)+3N_2O(g)\rightarrow 4N_2(g)+3H_2O(g)+210kcal

Explanation :

Balanced chemical equation : It is defined as the number of atoms of individual elements present on the reactant side must be equal to the number of atoms of individual elements present on product side.

The given unbalanced chemical reaction is,

NH_3(g)+N_2O(g)\rightarrow N_2(g)+H_2O(g)+105kcal

This chemical reaction is an unbalanced reaction because in this reaction, the number of atoms of individual elements are not balanced.

In order to balanced the chemical reaction, the coefficient 2 is put before the NH_3, the coefficient 3 is put before the N_2O\text{ and }H_2O and the coefficient 4 is put before the N_2.

The energy evolved in this reaction = 105Kcal\times 2=210Kcal

Thus, the balanced chemical reaction will be,

2NH_3(g)+3N_2O(g)\rightarrow 4N_2(g)+3H_2O(g)+210kcal

7 0
3 years ago
Is potassium fluoride a covalent bond or ionic bond
Ivahew [28]

It's an ionic bond! Potassium is a cation, or a metal with a positive charge, and fluoride is an anion, or a nonmetal with a negative charge.

A covalent bond is the bond between two nonmetals.

Hope this helped!

7 0
3 years ago
Read 2 more answers
A general term for a chemical which accelerates a reaction without becoming chemically involved is called a ______.
AleksAgata [21]

Answer:

Catalyst

Explanation:

A general term for a chemical which accelerates a reaction without becoming chemically involved is called a catalyst.

Catalysts are used in industrial processes to speed up the rate of a chemical reaction. For instance, in the Contact process used in the production of sulphuric (vi) acid, vanadium(V) oxide (V2O5) is used as a catalyst to speed up the production of the acid. Vanadium(V) oxide (V2O5) is preferred to Platinum which was initially used as the catalyst since it does not react with any of the products of the process

6 0
3 years ago
Other questions:
  • Which of the following is an example of incomplete dominance?
    11·1 answer
  • 0. Give an example of how an organism can use surface tension.<br><br><br>​
    7·1 answer
  • Write ground-state electron configurations for these ions, which play important roles in biochemical processes in our bodies. (U
    11·1 answer
  • The reaction converting glycerol to glycerol-3-phosphate is energetically unfavorable by 9.2 kJ. The reaction of ATP with water
    12·1 answer
  • Which element has a greater atomic radius Mg or Cl?
    11·1 answer
  • What is the name of the functional group that is attached to this hydrocarbon?
    5·1 answer
  • Which energy source is considered nonrenewable?
    9·2 answers
  • Another set of points have a good day
    8·2 answers
  • Carbon monoxide and nitrogen monoxide react to produce carbon dioxide and nitrogen gas. if the system contains platinum, then le
    6·2 answers
  • Question 3 of 25
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!