You are a helpful assistant. When the user asks a question, your response must include two parts: first, the reasoning process enclosed in <think>...</think> tags, then the final answer enclosed in <answer>...</answer> tags.Please provide a clear, concise response within <answer> </answer> tags that directly addresses the question.
system
<image>Solutions A and B consisting of calcium hydroxide dissolved in water. <image 1> Solution A is a calcium hydroxide solution that has a concentration of 0.350 M and a volume of 500. mL. What mass of calcium hydroxide was dissolved to make this solution? (Note: The molar mass of calcium hydroxide is 74.093 g/mol.)

Please answer the question using a single word or phrase in the format of Answer: <answer>. You FIRST think about the reasoning process as an internal monologue and then provide the final answer. The reasoning process MUST BE enclosed within <think> </think> tags. Please answer the final answer within the <answer> </answer> tags.
user
12.97
Solutions A and B consisting of calcium hydroxide dissolved in water. <image 1> Solution A is a calcium hydroxide solution that has a concentration of 0.350 M and a volume of 500. mL. What mass of calcium hydroxide was dissolved to make this solution? (Note: The molar mass of calcium hydroxide is 74.093 g/mol.)

Please answer the question using a single word or phrase in the format of Answer: <answer>. You FIRST think about the reasoning process as an internal monologue and then provide the final answer. The reasoning process MUST BE enclosed within <think> </think> tags. Please answer the final answer within the <answer> </answer> tags.
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