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
klasskru [66]
3 years ago
5

The term gas is limited to those substances that exist in the gaseous state at

Chemistry
1 answer:
Assoli18 [71]3 years ago
3 0
Physical change alters a given material without changing its chemical.
You might be interested in
Sulfur reacts with oxygen and creates two compounds. Compound A contains 1.34 g of sulfur for every 0.86 g of oxygen. Compound B
spayn [35]

Answer:

The mass ratio of oxygen rounded to the nearest whole no. 3 : 2

Explanation:

According to Law of Multiple proportion when two elements combine to make two or more different compounds, the mass ratio of the two element in the first compound, when divided by the mass ratio of the second compound , form a simple whole number ratio.

Compound A contains 1.34 g of sulfur for every 0.86 g of oxygen

        \frac{1.34}{0.86}= 1.5

Compound B contains 11.63 g of sulfur for every 10.49 g of oxygen

      \frac{11.643}{10.49}= 1.0

Ratio of oxygen in each compound

   always put the larger number over the smaller number.

\frac{CompoundA}{Compound B}=\frac{1.5}{1.0}=\frac{3}{2}

3 0
3 years ago
_____Mg + ____Fe2O3 → _____Fe + ____MgO
german

Answer:

3Mg + Fe₂O₃  → 2 Fe + 3MgO

Explanation:

Chemical equation;

Mg + Fe₂O₃  →  Fe + MgO

Balanced Chemical equation;

3Mg + Fe₂O₃  → 2Fe + 3MgO

This is the balanced equation. There are three magnesium, two iron and three oxygen atoms are on both side of equation thus it follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by french chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

7 0
4 years ago
Does the density of ice affect the melting rate of ice, or does adding objects affect melting rates? I'm going to need evidence
kotykmax [81]
The density of ice does not affect the melting rate. But, adding an object does affect the melt rate. The reason this is is because when there is an object, there is less to melt. Hence, affecting the melting rate.
7 0
3 years ago
Read 2 more answers
Compare S (secondary) waves and P (primary) waves. Why do they travel at different speeds?
Amanda [17]

S waves

  • These are shear waves .
  • The motion of the medium is perpendicular to  direction of propagation of the wave .
  • They can propagate only through solids and not through gases or liquids .
  • S waves are larger .
  • They travel with less speed .

P waves

  • These are compression waves .
  • These waves produces a force along the direction of propagation .
  • They can propagate through solids, gases and liquids.
  • P waves are smaller than s waves .
  • They travel with 60% greater speed than S waves .

P-waves travel 60% faster than S-waves on average because the interior part of the Earth does not react the same way as the s wave and P wave.

8 0
4 years ago
Help plz! What chemical makes an object give off light?
BARSIC [14]

Answer:

Its Chemiluminescence makes things glow by creating a chemical reaction.The electrons within the object become excited because of the reaction between two chemicals, and the electrons give off energy by blowing.

Maybe this helps I'm sorry if I got your answer wrong..

6 0
3 years ago
Other questions:
  • The activation energy for the reaction no2(g)+co(g)⟶no(g)+co2(g) is ea = 375 kj/mol and the change in enthalpy for the reaction
    8·1 answer
  • 1). What are 4 factors that can affect Reaction Rates?
    14·1 answer
  • 100 points PLZ hurry!!! Balance the chemical reaction PLZ.
    6·2 answers
  • . If an object’s mass is m=10. kg, what is its weight?
    6·1 answer
  • Which one of the following molecules would be most polar?
    10·1 answer
  • Which of the following scenarios is representative of parasitism?
    7·2 answers
  • Why is melting a physical property of the wax, but flammability is a chemical property?
    12·1 answer
  • An acetic acid buffer solution is required to have a pH of 5.27. You have a solution that contains 0.010 mol of Acetic acid. Wha
    5·1 answer
  • What is a solvent using your own words
    14·2 answers
  • Which statements are wrong about atoms
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!