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
TiliK225 [7]
3 years ago
7

Which of the following observations would indicate that a material is a pure substance

Chemistry
2 answers:
Lena [83]3 years ago
3 0
What is the following
yaroslaw [1]3 years ago
3 0

It does not dissolve in water.

It changes color after heating.

It cannot be physically broken down into different types of atoms.

It can be physically broken down into different types of molecules.

^the options

You might be interested in
Find the grams in 1.26*10^-4 mol of HC2H3O2
Oksana_A [137]

Answer:

0.00757 grams

Explanation:

Find the molar mass of the compound: which is 60.05.

The molar mass is basically just the sum of all the atomic masses of each of the elements.

Then multiply the molar mass by the number of moles in the compound, which is 1.26 x 10^-4 moles.

Your answer should be 0.00757 grams.

5 0
3 years ago
A 365 L balloon is blown up inside at 283 K. It is then taken outside in the hot sun and Heated to 300K. What is the new volume?
asambeis [7]

V₁ = initial Volume of the balloon after it is blown up = 365 L

V₂ = new Volume of the balloon after it is taken outside = ?

T₁ = initial temperature of the balloon = 283 K

T₂ = new temperature of the balloon = 300 K

using the equation

V₁/V₂ = T₁/T₂

365/V₂ = 283/300

V₂ = 387 L

6 0
3 years ago
Hydrides are compounds made up of hydrogen and metal. Why ammonia has the highest boiling point among the hydrides of elements i
RoseWind [281]
The correct option is D.
The hydrogen atoms that are attached to the nitrogen atom in the ammonia molecule are capable of forming hydrogen bond. The hydrogen bond that exist in the ammonia molecule is the reason why it shows higher boiling point compare to the other hydrides. Hydrogen bond occur in ammonia because ammonia is one of the most electronegative elements. 
3 0
3 years ago
What's an element in period 5 with larger radius than Yttrium?
eimsori [14]
Rubidium or strontium have larger a larger atomic radius since the further left on the periodic table you go, the larger the sizes of the atoms are.  This trend can be explained through effective nuclear charge which explains how the further left and down you go, the less the atoms nucleus is able to pull in the electrons around it.<span />
7 0
3 years ago
Which of the following is a way that materials are used?
Svetach [21]

Answer:

the answer is B.Construction

Explanation:

8 0
3 years ago
Other questions:
  • How would you measure the pH of a coloured substance such as red ink.why?
    14·1 answer
  • How many times does the moon rotate on its axis in one month
    14·1 answer
  • Identify the structure of a compound of molecular formula C4H8O2 that gives the following 1H NMR data: 0.95 (triplet, 3 H), 1.65
    15·1 answer
  • What’s the answer to this?
    11·1 answer
  • The displacement, d, in millimeters of a tuning fork as a function of time, t, in seconds can be modeled with the equation d = 0
    14·2 answers
  • Question attached above
    6·1 answer
  • What would you observe in the reaction of calcium with nitric acid​
    6·1 answer
  • What ions are formed when naoh is dissolved in water?.
    5·1 answer
  • Which is not a characteristic of a compound?
    13·1 answer
  • What is 1.0 x 10^-10 in standard form?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!