What does semi-preamble mean

How are we made from star debris? What does this mean? Explain

When Group 1 elements form ions, they?

Dimethylnitrosamine (CH3) 2N2O, is a carcinogenic formed in foods from nitrite ions used as preservatives. Calculate each of the following for this compound. Show all work for full credit. a. molar mass b. What is the % N

Sodium chloride solution can be electrolyzed in the laboratory. Describe what you would see ta the negative electrode

Which are examples of science rather than pseudoscience? Check all that apply. People can get rid of hiccups by holding their breath. The US surgeon general's 1964 report declared that smoking cigarettes was linked to cancer.

Carbon naturally occurs in two forms: diamond and graphite. Why do these two forms have very different properties?

How many moles of hydrogen are evolved when an excess of sodium metal is added to one mole of citric acid?

Write a net ionic equation for the reaction that occurs when barium sulfite (s) and excess hydrochloric acid (aq) are combined. Note: Sulfites follow the same solubility trends as sulfates.

A hydrate is a compound with water molecules incorporated into its crystal structure. In an experiment to find the percentage of water in the compound, the following data was recorded.

What do you get when you mix dog breeds such as a bulldog and a shih tzu?