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
svp [43]
3 years ago
14

Determine whether each statement is a description of a physical property or a chemical property.

Chemistry
1 answer:
Sunny_sXe [5.5K]3 years ago
5 0

Answer:

Paper=chemical

Salt=physical

Explanation:

You might be interested in
having that coloration is selected for since many predators will recognize it and stay away. Therefore the common coloration is
garri49 [273]

Answer: Natural selection.

Explanation:

The natural selection is the process by which the organism that best suits the characters will survive and the organism which cannot adapt the changes will die.

The predators feed on their prey and the organism which hides easily in the environment due to its color is safe and the animals that cannot camouflage will die.

This is natural selection that more favored character is carried out over generations and other that cannot survive die.

5 0
3 years ago
In a very violent reaction called a thermite reaction, aluminum metal reacts with iron (III) oxide to form iron metal and alumin
leva [86]
Here's the equation:
<span>Fe2 O3 + 2Al → 2Fe + Al2 O3 
</span>
Here's the question.
What mass of Al will react with 150g of Fe2 O3? 

<span>In every 2 moles Al you need 1 mole Fe2O3 </span>

<span>moles = mass / molar mass </span>
<span>moles Fe2O3 = 150 g / 159.69 g/mol </span>
<span>= 0.9393 moles </span>

<span>moles Al needed = 2 x moles Fe2O3 </span>
<span>= 2 x 0.9393 mol </span>
<span>= 1.879 moles Al needed </span>

<span>mass = molar mass x moles </span>
<span>mass Al = 26.98 g/mol x 1.879 mol </span>
<span>= 50.69 g </span>
<span>= 51 g (2 sig figs) 
</span>
So the <span>mass of Al that will react with 150g of Fe2 O3 is 51 grams.</span>
3 0
3 years ago
Determine the molar solubility for Cr(OH)3 Ksp = 6.3x10^-31 ....
r-ruslan [8.4K]

asgvjitipvvkkighnnoiopouhfd

6 0
2 years ago
What happens when a chemical is determined to be dangerous?
Vlada [557]

Answer:

b

Explanation:

8 0
3 years ago
The equation below represents a double replacement/displacement reaction;
Naddik [55]
AB+XY->AY+XB
We know that the answer would be KCl because of the switching that takes place during a double displacement reaction. Just like Zn and MnO4 switched and combined, the remaining elements, K and Cl, will combine.
We know that the answer is simply KCl because both K and Cl have an ion of only +/-1, meaning when they cross, no suffixes are made, since their ions are only 1.
For example, if you combined Mg with Cl, you would get MgCl2, because Mg has an ion of +2.
I hope this helps!
4 0
3 years ago
Other questions:
  • In the tollowing combustion reaction of acetylene (C2H2), how many lters of CO2 will be produced it 60 liters of 02 is used, giv
    6·1 answer
  • What is necessary in order to build an ionic compound?
    10·1 answer
  • 3. Find the mass of 4.77 x 1022 atoms of scandium<br> (Sc).
    5·1 answer
  • How many hydrogen atoms are in CH2OH?<br><br> a-10<br> b-3<br> c-5<br> d-4
    15·2 answers
  • How many grams of potassium chloride are required to make 250 ml of a 0.75 m kcl solution?
    13·1 answer
  • In which state of matter do molecules have the lowest kinetic energy?
    15·2 answers
  • Describe the interactions that are disrupted between water molecules when salt is added to the water that would affect the boili
    7·1 answer
  • You are given 3 unknown solutions with pH value as 6, 8 &amp; 9.5 respectively. Which solution will contain maximum OH ion
    5·1 answer
  • CH3CH3Li ionic or covalent
    13·1 answer
  • What is Matter and give the examples​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!