Chemist preformed Reaction of solid magnesium burning and found that the mass of the magnesium oxide what is greater than the mass of the magnesium. What is the reason behind this increase in math reaction of solid magnesium burning and found that the mass of the magnesium oxide what is greater than the mass of the magnesium. What is the reason behind this increase in mass?
Answers
Answer:
The magnesium reacted with the oxygen in the air.
Explanation:
For argument’s sake, let’s say that the mass of magnesium oxide was 3 g and that of the oxide was 5 g.
The reaction was
magnesium + oxygen ⟶ magnesium oxide
Mass: 3 g 5 g
Mass of oxygen = 5 g – 3 g = 2 g
The 3 g of magnesium must have combined with 2 g of oxygen to form 5 g of magnesium oxide.
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Give the systematic name for this coordination compound [Cr(H2O)4Cl2]ClO3
Answers
Answers
Answer:
3.72L
Explanation:
Given parameters:
Initial volume V₁ = 3.9L
Condition = STP
Final temperature T₂ = -550°C
Final pressure P₂ = 880mmHg
Unknown:
Final volume V₂ = ?
Solution.
At standard temperature and pressure(STP), the:
Pressure = 1atm = 760mmHg
Temperature = 273K
Therefore, P₁ = 760mmHg
T₁ = 273K
The general gas law, is best to solve this problem. It is mathematically given as:
Let us take the units to the appropriate one;
-550°C = 273 + (-550) = -277K
Input the variables;
V₂ = 3.72L
They are two different elements.
B.
They are two different compounds that include different elements.
C.
They are two different compounds that include the same elements in different arrangements.
D.
They are two different mixtures that include the same elements in different arrangements.
Answers
The answer to this question is C.
Answer:
Explanation:
Hydrogen peroxide
Hydrogen peroxide is a chemical compound with the formula H₂O₂. In its pure form, it is a very pale blue liquid, slightly more viscous than water. It is used as an oxidizer, bleaching agent, and antiseptic. Concentrated hydrogen peroxide, or "high-test peroxide", is a reactive oxygen species and has been used as a propellant in rocketry. Its chemistry is dominated by the nature of its unstable peroxide bond.
Chemical formula: H2O2
Density: 1.45 g/cm³
Boiling point: 302.36°F (150.20°C)
Average Molar mass: 34.01 g/mol
Melting point: 31.23°F (-0.43°C)
Legal status: Over-the-counter drug · Not evaluated by FDA
Water
Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms. It is vital for all known forms of life, even though it provides no calories or organic nutrients. Its chemical formula is H₂O, meaning that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. Two hydrogen atoms are attached to one oxygen atom at an angle of 104.45°.
Boiling point: 212°F (100°C)
Melting point: 32°F (0°C)
Chemical formula: H2O
Average Molar mass: 18.02 g/mol
IUPAC ID: Water
Cited sources
Hydrogen peroxide(wiki)
Water(wiki)
Other
So probably C or D i dont know
Sorry if it is wrong
Answers
Answer:
300 J.
Explanation:
- The first law of thermodynamics is the law that demonstrates the conservation of energy.
- It states that the total energy of an isolated system can not be created or destroyed, but it may be transformed into another form.
- The energy released to the room is 300 J.
- So, according to the law of conversation of energy; the amount of heat removed from food inside of the refrigerator is 300 J.
Answers
Solubility increases.
Answer:
solubility increases
Explanation:
For example with gases dissolved in liquids, a rise in temp would decrease solubility. There are even some solid in liquid soln where increasing temps decreases solubility.