UILS

Why is soap used to remove grease?

Which chemical has the greatest effect of neurotransmitter release?

4. Calculate the wavelength of radiation with a frequency of 8.0 x 104 Hz.

2 A (g) + B (g) / longrightarrow⟶ 2 C (g) Rate = k [A][B] At the beginning of one trial of this reaction, [A] = 3.0 M and [B] = 1.0 M. The observed rate for the formation of C is 0.36 mol L-1 sec-1.

A chemist needs to know the mass of a sample of to significant digits. She puts the sample on a digital scale. This is what the scale shows: 0 0 7 6. 2 1 g If this measurement is precise enough for the chemist, round it to significant digits.

A gas can holds 2.9 gal of gasoline. what is the quantity in cubic centimeters

Forces can be added together only if they are?

When h + forms a bottle of h2o to form the hydronium ion h3o plus this bond is called a coordinate covalent bond because?

The temperature program for a separation starts at a temperature of 50 °C and ramps the temperature up to 270 °C at a rate of 10 °C/minute.

Why are scientific explanations subject to change? A) Scientists always need better technology. B) Scientific explanations are only a best guess. C) New scientific explanations are always better than old explanations.

The solid above sink to the bottom when you put a container filled with it what does that tell you about density