<span>1 The change of matter from a solid state to a gas state is called sublimation.
</span><span>2. When a solute is completely dissolved in a solvent, a solution is formed. (A)
3. Base are used in </span><span>Used in ammonia, Alka-Seltzer, and dish soap
</span><span>
4. </span><span>TRUE . Simple devices lower the required input force.
5. FALSE. It's the opposite.</span>
Answer:
87.54 g of H₂O₂
Explanation:
From the question given above, the following data were obtained:
Number of molecules = 1.55×10²⁴ molecules
Mass of H₂O₂ =.?
From Avogadro's hypothesis,
6.02×10²³ molecules = 1 mole of H₂O₂
Next, we shall determine the mass of 1 mole of H₂O₂. This can be obtained as follow:
1 mole of H₂O₂ = (2×1) + (2×16)
= 2 + 32
= 34 g
Thus,
6.02×10²³ molecules = 34 g of H₂O₂
Finally, we shall determine mass of H₂O₂ that contains 1.55×10²⁴ molecules. This can be obtained as follow:
6.02×10²³ molecules = 34 g of H₂O₂
Therefore,
1.55×10²⁴ molecules
= (1.55×10²⁴ × 34)/6.02×10²³
1.55×10²⁴ molecules = 87.54 g of H₂O₂
Thus, 87.54 g of H₂O₂ contains 1.55×10²⁴ molecules.
Answer:
15.99937 is the value of this question answer
The following statements are correct:
ZINC SULPHATE ARE SOLUBLE IN WATER.
TABLE SALT DISSOLVES IN WATER TO FORM A SOLUTION.
CARBON DIOXIDE GAS WILL BE MORE SOLUBLE IN WATER WHEN THE PARTIAL PRESSURE IS HIGH.
A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.
A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture.
