What is the most obvious sign of a chemical change in this reaction.

a. a gas was produced.

b. the powder mixed with the water.

c. there was a change in temperature. eliminate

d. the powder dissolved in the water.?

October 15, 2018 at 1:49 PM Dioxybenzone is a compound found in sunscreen, and only contains carbon, oxygen, and hydrogen. Analysis of the compound found that it contains 4.92% hydrogen and 26.18% oxygen. The molar mass of the compound is 244.

How did Democritus describe oil atoms

Select the set of compounds that have the same empirical formula a. H2O and H2O2 b. N2O4 and NO2 c. CO and CO2 d. CH4 and C2H6

Which of the following can happen during a chemical change? A. atoms change into new types of atoms. B. bonds break, and new bonds form. C. nuclei of atoms break apart and combine D. All of the electrons in the atom are lost

What is the unit of force

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.

What element has the electron arrangement 2,8,4?

If you get pregnant in Dec how long will it take for u to get to second trimester

Name the following compound HClO