A cup of black coffee has a [h+]=1*10-5. what is the ph of this coffee? is this coffee an acidic or a basic solution?

Describe how the periodic table differentiates between metals and nonmetals. I need a very informative description/explanation on this.

1. Which is not an example of a physical change to a wooden stick? A) slicing wood shavings from the stick B) bending the stick back and forth C) burning the stick D) chopping the stick in half

Rahul burnt 3kg of fire wood got only 500 g of ashes and says that Law of conservation of mass is not valid do you agree or disagree

What object transforms electrical energy into chemical energy? Group of answer choices An electric fan A television A battery operated remote controlled car A battery charger for rechargeable batteries

According the lewis dot structure shown here, how many valence electrons does chlorine have?

How hot would a 2.3 L balloon have to get to expand to a volume of 3.0 L? Assume the initial temperature of the balloon is 24 °C, and that the pressure inside the balloon remains constant. A. 3 K B. 42 K C. 128 K D. 390 K

Which pair of nitrogen bases will form a bond in a DNA molecule? a. cytosine and adenine b. adenine and thymine c. guanine and thymine d. thymine and cytosine

Most meteors that fall into the earths atmosphere burn up before reaching the ground. Why is this?

Imagine a chemist is in the lab and trying to make some chemical reactions happen. In one reaction she reacts chemicals in an exothermic reaction and there is an increase in entropy.

Which of the following requires an oxidizing agent? Al yields Al3+ 2 O yields O2 Cl2 yields 2 Cl- Ag + yields Ag