Which statement is true about the SI System?

Uses different base units than the English measurement system.

Is used in scientific measurement.

Includes the meter as its base unit for length.

All of the above.

Explain why the invention of the microscope was important in the study of cells

Examine the equation. C3H8 (g) + 5O2 (g) →3CO2 (g) + 4H2O (l) In the equation shown, what is the number 4 an example of? reactant chemical formula coefficient product

Describe how molecules form from individual elements. How and why can we predict which molecules will form?

A 5.60 mol sample of solid A was placed in a sealed 1.00 L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reaches 1.40 M, where it remained constant.

What makes the Group 1 elements the most reactive metals? They have 8 valence electrons. They have 7 valence electrons. The have no valence electrons. They have 1 valence electron.

Use the following half-reactions to design a voltaic cell: Sn4 + (aq) + 2 e - → Sn2 + (aq) Eo = 0.15 V Ag + (aq) + e-→ Ag (s) Eo = 0.80 V What is the overall cell potential? Group of answer choices

How did primo levi use his chemistry to survive Auschwitz?

Calculate the percent yield when 500 grams of carbon dioxide react with an excess of water to produce 640 grams of carbonic acid. CO2 + H2O - --> H2CO3

Which of the following is a possible equivalence that can be used in a conversion? A. ten to the negative second power hL over one L B. ten to the negative second power cL over one L C. ten to the first power L over one daL D.

Which process is a chemical change? burning a match boiling water melting ice breaking glass