If the internal energy of a thermodynamic system is increased by 300J while 75J of expansion work is done?

how much heat was transferred and in which direction to or from the system?

A variable is the factor in a controlled investigation that does not change. True or False

Balance the following unbalanced redox reaction (assume acidic solution if necessary) : Cr2O72 - + Cl - → Cl2 + Cr3 + Indicate the coefficient that will be used for Cl2 (g) in this reaction

Under what circumstances would you expect to find unreacted acetophenone in the product in this experiment?

True or False: 1. We are all made of cells. 2. Humans, Plants, and Animals need sunlight. And 3. We have 200,000 hiccups every year.

How do the properties of elements in the same row of the periodic table compare?

What is the octet rule and how does it explain the formation of ionic compounds?

Can somebody explain step by step how to solve decomposition reactions?

Which of the following statements are correct about the chemical reaction? H2 + O2 - > H2O2 versus 2 H2 + O2 - > 2 H2O? They are both balanced chemical equations. The two reactions are equivalent. The laws of thermodynamics apply to both.

What do chemists use to describe a chemical reaction

When you drop a sugar cube in a glass of water, at first the water doesn't taste sweet. Later, it tastes very sweet. Eventually, the water will taste equally sweet throughout. What term explains molecule movement to maintain a balance?