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
trasher [3.6K]
4 years ago
7

The term accuracy best refers to which of following

Chemistry
1 answer:
Delicious77 [7]4 years ago
4 0
The extent to which a given measurement agrees with the standard value for that measurement
You might be interested in
What is the number of moles in 15.0 g AsH3?
pentagon [3]

We are given with the mass of Arsine (AsH_{3}

The mass of arsine is 15g

there is a relation between moles, mass and molar mass of any compound which is

moles=\frac{mass}{molarmass}

The molar mass of Arsine = atomic mass of As + 3X atomic mass of H

the molar mass of Arsine = 74.92 + 3X 1 = 77.92 g/mol

Let us calculate the moles as

moles=\frac{15}{77.92}=0.192mol


7 0
3 years ago
Which of the following describes an element? Choose all that apply.
Svetradugi [14.3K]

Answer: Element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing a single proton and a single electron

Explanation:a b d

8 0
3 years ago
N2+3H2—> 2NH3 What volume of NH3 at STP is produced if 25.0g of N2 is reacted with an excess of H2 ?
Butoxors [25]

Answer:

The answer to your question is 40 L of NH₃

Explanation:

Data

Volume of NH₃ = x

mass of N₂ = 25 g

mass of H₂ = excess

Balanced chemical reaction

                     N₂  +  3H₂   ⇒  2NH₃

Process

1.- Find the molar mass of N₂ and NH₃

N₂ = 14 x 2 = 28g

2NH₃ = 2[ 14 + 3] = 34 g

2.- Write a proportion to solve this problem

                    28 g of N₂ --------------- 34 g of NH₃

                     25 g of N₂ -------------   x

                     x = (25 x 34)/28

                     x = 30.36 g of NH₃

3.- Calculate the volume of NH₃

                     17 g of NH₃ -------------- 22.4 L

                     30.36 g of NH₃ --------  x

                     x = (30.36 x 22.4) / 17

                     x = 40 L

6 0
3 years ago
How do you determined the polarity of other componds by first predicting the polarity of water​
fenix001 [56]

Answer:

h20 is water ash a chemical compound

Explanation:

4 0
3 years ago
The acceleration of a sprinter is 10 m/s2. The force exerted on the starting blocks is 650 N. What is the mass of the sprinter?
jek_recluse [69]

The relation between force, mass of an object and its acceleration is given by following equation

F = mass of object X acceleration

The unit of Force is Newton (N)

unit of acceleration is ms⁻²

unit of mass if Kg

[all these are SI units]

Mass of object =\frac{Force}{acceleration}

mass of sprinter =\frac{650}{10}=65kg

5 0
3 years ago
Read 2 more answers
Other questions:
  • A sample of calcium carbonate, caco3(s) absorbs 45.5 j of heat, upon which the temperature of the sample increases from 21.1 °c
    7·1 answer
  • Assuming all volume measurements are made at the same temperature and pressure, how many liters of water vapor can be produced w
    5·1 answer
  • Amorphous silica, SiO2, has a density of about 2.2 g/cm3, whereas the density of crystalline quartz, another form of SiO2, is 2.
    11·1 answer
  • This is a natural Landmark can vary greatly in size as a result of flooding and evaporation what is its correct name and locatio
    7·1 answer
  • Which compound contains only nonpolar covalent bonds?<br> O 02<br> 0 CO2<br> O H20<br> O NO3
    11·2 answers
  • Why can a hydrogen atom form a covalent bond without fulfilling the octet rule?
    6·2 answers
  • Roberto wants to measure the lengths of the sides<br> of a metal cube. Which tool should he use?
    5·1 answer
  • H2O2
    9·1 answer
  • You find out that it does not dissolve in water, has a very high melting point and conducts electricity when molten. The substan
    5·1 answer
  • Question 6 of 30
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!