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32 + 16 – 13 x 18 ÷ 2 = ? 32 ÷ 16 × 13 – 18 + 2 2 × 13 – 18 + 2 26 – 18 + 2 = 10
Which radioactive element is used in heart pacemakers?
What is the common name of sodium carbonate?
Bases react with acids to form ________.
Which of the following is correct regarding isobars?
I. They have different atomic numbers
II. The have same mass numbers
Adding which substance gives a blue color to glass?
What is the chemical name for baking soda?
The efficiency of a Carnot engine depends on:
Which one of the following is commonly used for pulp bleaching in the paper industry?
Which of the following cannot be cut by a knife?
Which acid is present in grapes?