5. Por favor calcula la masa molar de la molécula glucosa: C_(6)H_(12)O_(6)

4. How many formula units are contained in 0.67 g CaO?

1. How many grams are contained in 0.54 moles of calcium?

If I have 3 grams of hydrogen peroxide, H_(2)O_(2) how many moles of hydrogen peroxide are there?

7. An square solution is a solution in which the concentration of hydrogen ions is greater than the concentration of hydroxide ions.

Calculate the number of atoms in a 4.97times 10^-20 mol sample of strontium. Round your answer to the hundreds place.

There are 103.0 g of chlorine gas (Cl_(2)) and 23.0 g of helium (He) mixed in a container with a total pressure of 1,741 mmHg. Determine the partial pressure of helium gas.Round your answer to the nearest hundredths place. Answer: underline ( )mmHg square

The direct change from the solid state to the vapor state is called __ evaporation sublimation boiling fusion

Henry divides 1.060 g by 1.0 mL to find the density of his water sample.How many significant figures should he include in the density value that he reports? one two three four

2. Create a four-carbon molecule that is a. an alkane b. a carboxylic acid c. an alcohol d. an ester

Hot Questions

Before you go, which type of molecule would you choose to be the anode in a lithium battery? a) The metal with the most negative potential b) It does not matter since lithium's potential is so negative c) The metal with the most positive potential d) Another lithium compound

Part I: Unit Conversions.Show all work (known and unknown, and dimensional analysis - including units! Write your answers in the boxes provided. Unit Test: Dimensional Analysis and Mole Convers 1. Find the number of minutes in 25 years, assuming that $1year=365days$ K:25 years 2. The driving distance from Spokane to Seattle is 479,000 meters. Convert this distance to miles given $1m=100cm,1in=2.54cm,12in=1ft,$ and $1mi=5280ft$ $\square $ Part II: Mole Conversions . Show all work (known and unknown, and dimensional analysis - including units! Write your answers in the boxes provided. 3. A sample contains $9.2\times 10^{22}$ atoms of beryllium (Be)How many moles is this? $\square $ 4. The formula for Aluminum Carbonate is $Al_{2}(CO_{3})_{3}$ What is the molar mass of aluminum carbonate? $\square $

The following reaction is an example of a substitution reaction. $2Na+Cl_{2}\rightarrow 2NaCl$ TRUE FALSE

Heterogeneous mixtures are observed to be uniform throughout. True False

What are some examples of foods that need an emulsifier mayonnaise chocolate ice-cream oil water various salad dressings.

27. The contents of a drum have not been identified. You notice crystalline material on top of the drum, you should treat the contents as: A. shock-sensitive waste. B. nearly empty. C. containing chlorinated solvent. D. containing caustic materials.

A weak acid is a dilute acid that is not very powerful. True False

What is a crucial aspect of chemical optimization? Adjusting team member speed Pre-treating the vehicle Using water reclamation tanks Ordering new equipment

Why is chemistry sometimes referred to as the "central science?" Because we need to know it to survive as a species. Because it is interconnected with many other STEM disciplines. Because it incorporates principles from math and physics. Because there are many subdisciplines of science that rely on chemistry.

Malia was able to make a paperclip float on the surface of water. What will most likely happen to the paperclip if a drop o dishwashing detergent is added near it? Soap is a surfactant that increases the intermolecular forces of water allowing the paperclip to continue to float. Soap makes the water less viscous making the paperclip sink. Soap is a surfactant that disrupts the intermolecular forces of water making the paperclip sink. Soap makes the water more viscous allowing the paperclip to continue to float.