A mystery substance is found to be a very strong base. What will its pH most likely be?

What is the velocity of a quarter dropped from a tower after 10 s?

Which piece of lab equipment would be least useful in finding the precise density of an unknown liquid? A. Beaker B. Graduated cylinder C. Electronic balance D. Triple-beam balance

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Ethan made a diagram to compare examples of the first and second laws of thermodynamics. What belongs in the areas marked X and Y?

Why emf is measured in open circuit?

A diffraction grating is illuminated simultaneously with red light of wavelength 670 nm and light of an unknown wavelength. The fifth-order maximum of the unknown wavelength exactly overlaps the third-order maximum of the red light.

Four soccer players are running down the field at the same speed. Player 1 weighs 145 lbs and is running toward the north goal, player 2 weighs 175 lbs and is running toward the south goal, player 3 weighs 155 lbs and is running toward the south

Pure water has a hydrogen ion concentration of 1 x 10 (-7) M and a ph of 7. A student measures a basic solution and finds that it has a hydrogen ion (H+) concentration of 1 x 10 (-3).

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A train travels 53 kilometers in 4 hours, and then 90 kilometers in 3 hours. What is the average speed