Answer:
the second one
Explanation:
Ca+ZnCO3 is the same as calcium + zinc -> is equal to CaCo3+Zn and that is calcium carbonate +zinc which is what the statement states
Answer: 1169.298 L
Explanation: In order to go from grams to liters, you must find the moles first using the molar mass, 62.068 g/mol (found via google search). I will assume the ethylene glycol is in gas form so we can use the 22.4 L per mol conversion.
Using dimensional analysis, starting with the kg, we must convert to grams, then moles, then liters.

Multiply the top individually, then the bottom individually.

Divide out.

In the end, we get 1169.298 L of ethylene glycol.
Answer:
1.17 M
Explanation:
Step 1: Given data
Molar concentration of Li₃PO₄: 0.390 M
Step 2: Write the reaction for the dissociation of Li₃PO₄
Lithium phosphate is a strong electrolyte that dissociates according to the following equation:
Li₃PO₄(aq) ⇒ 3 Li⁺(aq) + PO₄³⁻(aq)
Step 3: Calculate the molar concentration of lithium ions
The molar ratio of Li₃PO₄ to Li⁺ is 1:3. The molar concentration of Li⁺ is 3/1 × 0.390 M = 1.17 M.
The answer is 60 minutes to complete 50% of reaction.
Kl alabayel ma almtran ashaw yabn alam