The Arrhenius model of that any chemical that releases hydrogen ions when dissolved in water is an square

5. What is the coordination number of the Pt metal ion in the compound [Pt(en)_(2)(Cl)_(2)](NO_(3))_(2) a. 2 b. 4 c. 6 d. 8

What general trend does electronegativity follow on the periodic table? A. It decreases with increasing group number. B. It increases with increasing group number. C. It remains constant from top to bottom. D. It remains constant from left to right.

8. One of the disadvantages of a phenol disinfectant is that it: a. is corrosive to metals. b. has a lower kill spectrum. c. has toxic effects of fumes. d. leaves a residue on surfaces.

Which of the following is correct about water? Water can be separated with a hydrolysis reaction. Water has a basic pH. The composition of water is hydrophobic. Water is formed with a polar covalent bond.

Convert. Write your answer as a decimal or whole number. 0.9g=square mg

Breaking a chemical bond requires energy. True or False True False

Which of the following energy quantities is equivalent to 258 Cal? Multiple Choice 258 cal 1080 J 1080 kJ 6.17times 10^4kJ None of the choices are correct.

A catalytic converter uses a catalyst to catalyze three reactions that clean up the exhaust from an auto engine. Which element is not used as a catalyst in catalytic converters? Multiple Choice platinum rhodium sulfur palladium All of these are used as catalysts in catalytic converters.

4. From the balanced chemical equation solve the following questions bellow: N_(2)+3H_(2)arrow 2NH_(3) a) Determine the number moles of ammonia (NH_(3)) produced from the complete reaction of 0.75 moles of hydrogen gas (H_(2)) [5pts] __ __ __ b) Determine the number of grams of nitrogen gas (N_(2)) required to produce 550 g of ammonia (NH_(3)) [5pt

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.