Which of the following changes would decrease the rate at which a solid solute dissolves in a liquid solvent? Decreasing pressure Decreasing surface area Increasing rate of stirring Increasing temperature

Question 3(Multiple Choice Worth 4 points) (08.01 LC) Which of the following is not a property of water? Hydrogen bonding causes a high surface tension. Hydrogen bonds exist only in the solid state. Water can dissolve ionic and polar molecules. Water's solid state is less dense than its

How do I find the number of neutrons in an element? The number of neutrons in an element is one more than the number of neutrons in the element found before it on the periodic table. The number of neutrons in an element, equals the number of protons in the element. The number of neutrons in an element equals the atomic mass (rounded to the nearest whole number) minus the atomic number. The number of neutrons in an element equals the number of protons and electrons added together.

3. What part of the product label describes the hazardous effects of a chemical? Product name Hazard statement Signal word Use guideline

Solve for [Al] in the expression: 4.0times 10^-6=([Al]^2)/(0.050) 4.0times 10^-14 2.0times 10^-7 4.5times 10^-4 8.9times 10^-3

Which of these elements are NOT found in carbohydrates? carbon hydrogen nitrogen oxygen

Which of the following pairs of coordination compounds or complex ions are examples of coordination isomers? [Ti(H_(2)O)_(6)]^3+ and [Ti(NH_(3))_(6)]^3+ [Fe(NH_(3))_(2)(H_(2)O)_(4)]Cl_(2) and [Fe(NH_(3))_(2)(H_(2)O)_(4)]I_(2) [Cr(CO)_(5)NO_(2)]^2+ and [Cr(CO)_(5)ONO]^2+ [Cu(NH_(3))_(5)Br]Cl and [Cu(NH_(3))_(5)Cl]Br [MnCl_(3)Br]^2- and [MnClBr_(3)]^2-

Fill in the Blank Question The initial response to stress is the square reaction.

Chlorous acid. HClO_(2) contains what percent hydrogen by mass? 1.92% 25.0% 23.4% 1.47% 5.18%

The chemical trimethylamine N-oxide not only gives fish their fishy smell but also protects them from crushing hydrostatic pressure in deep waters. Trimethylamine N-oxide strengthens the bonds between water molecules in a fish's body. __ these water molecules maintain their linked structure at extreme depths, thus preventing pressure -related damage. Which choice completes the text with the most logical transition? Choose 1 answer:

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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.