3) After you have the mass of your dried copper,calculate the number of moles of copper and moles of chlorine in your sample. 4) Determine the mole ratio of these 3 components Cu, Cl and H_(2)O by dividing by the smallest number.Take into account significant figures. 5) Predict the correct chemical formula for the compound.

6. A helium balloon has a volume of 3.4 liters and a pressure of 1.05 atmospheres at 25^circ C How many moles of helium gas are in the balloon? How many grams of gas?

If 2.38 mol of a gas has a volume of 120.0 mL, what is the volume of 1.97 mol of the gas at the same temperature and pressure?

If 5.00 g of gray iron powder reacts with 2.38 g of red phosphorus powder, what is the mass of the iron phosphide product? square

Fill in the Blank Question To convert amount in moles to the number of atoms in an element.multiply by square square

Calculate Delta G^0 at 597 K for H_(2)O(g)+1/2O_(2)(g)rightarrows H_(2)O_(2)(g) using the following data: H_(2)(g)+O_(2)(g)rightarrows H_(2)O_(2)(g) K=2.8times 10^37 at 597 K 2H_(2)(g)+O_(2)(g)rightarrows 2H_(2)O(g) Delta G^0=square kJ/mol

This mineral is believed to act by enhancing the effects of insulin. Molybdenum lodine Chromium

What characteristics are shared by all alkali metals and alkaline earth metals? They form alkaline solutions when mixed with water They conduct electricity very well They do not react with water at all They are strong and shiny

What is q if 28.6 g of water is heated from 22.0^circ C to 78.3^circ C The specific heat of water is 4.184J/gcdot ^circ C 2.60 J 2.63 kJ 6.74 kJ 9.37 kJ 3.94times 10^4kJ

Consider the following reaction. 2NO_(2)(g)leftharpoons N_(2)O_(4)(g) K_(p)=3.10at298K Calculate K_(c) at this temperature. square

Hot Questions

How many protons are in an atom of carbon with 7 neutrons? a) 6 b) 7 c) 12.01 d) 13 e) None of the above

How many electrons are in the element potassium with 20 neutrons? a) 19 b) 20 c) 39 d) 39.10 e) None of the above

An erlenmeyer flask has a calibration of 50 mL. To what value can you estimate a measured volume? the nearest 0.01 mL the nearest 1 mL the nearest 0.1 mL the nearest 10 mL

2. Can you determine conclusively that an unknown substance contains only magnetite by using only a magnet? Explain your answer. __

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

$2Fe_{2}O_{3}(s)+3C(s)\rightarrow 4Fe(s)+3CO_{2}(g)$ Calculate the mass of iron produced from the complete reaction of 64.0 grams of iron (III)oxide. 89.5 g Fe 22.48 Fe 11.2 g Fe 44.88 Fe 107 g Fe

QUESTION Q Which of the following is true concerning mass number? ANSWER Using mass number notation, we can identify the number of protons. electrons.and neutrons. Isotopes differ in their numbers of electrons. The mass number is equal to the number of protons. Thus, the mass number of Helium is 2. The mass of electrons contributes significantly to mass number. IDONT KNOWYET

Multiple Choice Question If phenol red is added to a solution with a pH of 9.0, it will appear __ pink-red yellow

What precipitate forms when mixing silver(I)nitrate and sodium chloride? silver(I) chloride sodium nitrate no precipitate forms

Which of these equations correctly expresses the self-ionization of water? $H_{2}O+H_{3}O^{+}\leftrightarrow H_{2}O+OH^{-}$ $H_{2}O+H_{2}O\leftrightarrow 2OH^{-}$ $H_{2}O+H_{2}O\leftrightarrow 2H_{3}O^{-}$ $H_{2}O+H_{2}O\leftrightarrow H_{3}O^{+}+OH^{-}$