Identify each of these substances as acidic, basic, or neutral.

pure water, pH = 7.0

lake water, pH = 6.5

baking soda solution, pH = 9

soapy water, pH = 12

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Describe how energy makes its way from the nuclear core of the Sun to the atmosphere. Include the name of each layer and how energy moves through the layer.

A positively charged sphere with a charge of the of 8Q is separated from a negatively charged sphere - 2Q by a distance r. The spheres briefly touch each other and move to the original distance are.

A toy car has a 1.5-A current, and its internal resistance is 2 ohms. How much voltage does the car require? .75 J 3 J .75 V 3 V

You're driving down the highway late one night at 20 m/s when a deer steps onto the road 38 m in front of you. Your reaction time before stepping on the brakes is 0.

In 1665 Sir Isaac Newton proposed the fundamental law of gravitation as a universal force of attraction between any two bodies. What does this theory state about the force that makes an apple fall and the force that keeps the moon in its orbit?

How to calculate kinetic energy? (physics/physical science)

What's the difference between the offspring of an asexual organism and a sexual organism

The contamination that results from the spread of bacteria from meat to vegetables is called

A rock has a mass of 5 kg on the moon. What is the mass of the rock on the earth

A battery applies 45 volts to a circuit, while an ammeter reads 10 ma. later, the ammeter reading drops to 7 ma. assuming the resistance has not changed, the voltage must have