What is the empirical formula for butane, C4H10

In a chemical reaction, a certain amount of hydrochloric acid reacts with 10 grams of sodium hydroxide to produce 19 grams of a solution containing sodium chloride and water. Which statement is correct? The mass of water formed is 29 grams.

What type of claim must be supported by scientifically valid evidence for it to be approved for use on a food label? A. Health claim B. Nutrient content claim C. Structure/function claim D. EER

How many elements are in NH3

A uranium atom has 92 protons in its nucleus. how many electrons does it have?

Write the formula for the compound formed between potassium and sulfur. ks ks2 k2s k2so3 k3s2

Balance the following chemical equation. Mg + N2 → Mg3N2 A. 3 Mg + N2 → Mg3N2 B. 3 Mg + 2 N2 → Mg3N2 C. 6 Mg + 2 N2 → 3 Mg3N2 D. Mg + N2 → Mg3N2

Which of the following correctly categorizes the following infectious agents? 1. Viruses-living; bacteria-living 2. Viruses-nonliving; bacteria-nonliving (this answer choice is wrong) 3. Bacteria-nonliving; viruses-living 4.

A student wants to compare how easily a metal and a plastic spoon of the same temperature can transfer thermal energy. Which of the following activities should the student perform? Measure the effort required to bend each spoon.

What is the molar mass of a compound?

an element has an isotope with a mass of 203.973 amu and and abundance of 1.40%. another isotope has a mass of 205.9745 amu with an abundance of 24.10%. a third isotope weighs 206.9745 amu and is 22.10%, and the fourth isotope weighs 207.