Alright my friend so let's put it this way A banana ripening is still a chemical change so we can throw that one out if hydrogen is burning it'll be a chemical zinc is reacting with an acid therefore making it a chemical so the best option will be that liquid water turning into vapor would be a physical change so 4. is your answer
Answer: A. Earth is an inner planet with a solid rock surface composition, while Jupiter is an outer planet with a gas surface composition.
Answer:
Desolving process occur when salt is added in water.
Because the smuggled chemicals that people steal are not often been checked.These chemicals are made into homemade bombs.
Answer:
24g of NaOH are required
Explanation:
Molarity, M, is an unit of concentration widely used in chemistry defined as the ratio between moles of solute (In this case, NaOH), and volume of solution in liters.
We can find the moles of NaOH and its mass with the volume and desired concentration as follows:
<em>Moles NaOH:</em>
400.0mL = 0.400L * (1.50mol / L) = 0.600 moles NaOH
<em>Mass NaOH -Molar mass: 40.0g/mol-:</em>
0.600 moles * (40.0g / mol) =
<h3>24g of NaOH are required</h3>