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
Tamiku [17]
3 years ago
14

If you tested two samples of a particular pure substance, what would you find?

Chemistry
1 answer:
saw5 [17]3 years ago
3 0

Answer:

The properties of a pure substance can be used to determine whether a sample is a pure substance or mixture because the characteristic properties of matter can be used to identify a sample. The result is a mixture called a composite.

Explanation:

You might be interested in
A 3.4 g sample of sodium hydrogen carbonate is added to a solution of acetic acid weighing 10.9 g. The two substances react, rel
natima [27]

Answer: 2.7 grams

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

NaHCO_3(aq)+CH_3COOH(aq)\rightarrow CH_3COONa(aq)+H_2O(l)+CO_2(g)

Given: mass of sodium hydrogen carbonate = 3.4 g

mass of acetic acid = 10.9 g

Mass of reactants = mass  of sodium hydrogen carbonate+ mass of acetic acid = 3.4 + 10.9= 14.3 g

Mass of reactants = Mass of products in reaction vessel + mass of carbon dioxide (as it escapes)

Mass of  carbon dioxide = 14.3 - 11.6 =2.7 g

Thus the mass of carbon dioxide released during the reaction is 2.7 grams.

7 0
3 years ago
.......... water is good for formation of bones and teeth, soft water or hard water? ​
lana66690 [7]

hard because it has calcium and magnesium

4 0
3 years ago
When a voltaic cell operates ions move through the
Lady bird [3.3K]
When a voltaic cell operates, ions move through a salt bridge. The presence of the salt bridge completes the circuit because it promotes ion flow. It maintains the charges balance since the electron are moving from a half cell to another.
8 0
3 years ago
A NASA explorer spacecraft with a mass of 1,000 kg takes off in a positive direction from a stationary asteroid. If the velocity
Kamila [148]
We apply the momentum preservation principle and we have.
p(before)=p(after)
0=1000×250-25m
m=10000kg or 10 tonns
7 0
3 years ago
Read 2 more answers
9. Which of the following concentrations has units of moles of solute per liter of solution?
11Alexandr11 [23.1K]
The best answer for this is A) I’m pretty sure it is
7 0
3 years ago
Other questions:
  • Which is more metallic<br> a) Gold<br><br> b) Bismuth
    11·1 answer
  • Which items are directly related to radioactive decay
    10·1 answer
  • What is the difference between solid HCl and liquid HCl
    15·1 answer
  • At the base of a frictionless icy hill that rises at 25.0∘ above the horizontal, a toboggan has a speed of 11.5 m/s toward the h
    9·1 answer
  • The moon accelerates because it is _____.
    7·2 answers
  • If the same large amount of heat is added to a 250 g piece of aluminum and a 150 g piece of aluminum, what will happen?
    14·1 answer
  • A manufacturing plant has been found guilty of polluting the nearby river. This is _______ pollution.
    11·2 answers
  • A GFCI is an example of what kind of electrical safety device?​
    12·1 answer
  • The compound dimethylamine, (CH3)2NH, is a weak base when dissolved in water. Write the Kb expression for the weak base equilibr
    13·1 answer
  • a mixture of gases at atmosphere contain 65%ofnitrogen, 15%ofcarbon dioxide and 20%of oxygen by volume.what is the partial press
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!