10) An atom with a mass number of 58 and 32 neutrons will have __ protons. A) 16 B) 62 C) 32 D) 58 E) None of the above

The "bends" is a condition which some deep sea divers can acquire if they come up too fast from deep underwater. This is because the nitrogen N_(2) gas in their forming larger bubbles obstructing blood circulation. If a diver has 0.10 liters (L) of gas in his blood at an initial pressure of 100 atm, but then rises very quickly to blood has a new pressure of 50.0 atm of pressure, what will the new volume of gas in the blood be? 50L 201 0.20 L 0.0051

What is the molar mass of sodium nitrate? 89.99 g 84.99 g 55.85 g 25.78 g

1) How many milliliters of the approximately 0.16 M prepared copper(II) sulfate stock solution are needed to prepare 100.00 milliliters of a 0.016 M copper(II) sulfate solution? square mL

When the equation below is balanced, the coefficient in front of water molecule is __ underline ( )NH_(4)OH+underline ( )H_(3)PO_(4)arrow underline ( )(NH_(4))_(3)PO_(4)+underline ( )H_(2)O 1 2 3 4

What are substances on the right side of a chemical equation called? electrons groups products reactants

Which group of elements has a full octet of electrons? a) Halogens b) Noble gases c) Alkali metals d) Transition metals

14. The chemical most commonly used to raise pH is: Chloramines Cyanuric acid Sodium carbonate Calcium carbonate

8. The term pH is determined by the concentration of: Chlorine ions Water molecules Hydrogen ions Hydroxyl ions

Identify the Bronsted acid(s)in the reaction. HIO_(3)(aq)+H_(2)O(l)leftharpoons H_(3)O^+(aq)+IO_(3)^-(aq) HIO_(3) HIO_(3) and H_(3)O^+ H_(2)O H_(2)O and HIO_(3)

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.