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Practice Problem ATTEMPT
In each case, calculate the appropriate ratio to show that the information given is consistent with the law of multiple proportions. (a) Both ammonia
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- Which molecular formulas are also empirical formulas?SELECT ALL THAT APPLY. THERE IS MORE THAN ONE. C2H4 C5H5N5O C8H10N4O2 K2SO4 C6H6 Na2C2O4 C3H8 C6H12O6arrow_forwardLike Dalton, chemists continue to model atoms using spheres. Modern models are usually drawn with a computer and use different colors to represent atoms of different elements. Which of the models below represents CO2?arrow_forwardPractice Exercise 1Tetracarbon dioxide is an unstable oxide of carbon with thefollowing molecular structure:What are the molecular and empirical formulas of thissubstance? (a) C2O2, CO2 (b) C4O, CO (c) CO2, CO2(d) C4O2, C2O (e) C2O, CO2arrow_forward
- Problem 2-52 only; atomic mass is written on the problem in the first picture. Use correct sig figsarrow_forwardUnknown element branium has two isotopes. the first isotope (A) has a mass of 56.971 amu and the second isotope (B) has amass of 83.339 amu. The average mass of branium has been determined to be 63.941 amu. What is the percent abundance of the first isotope (A)arrow_forwardAnswered 3: which best represents the isotope?arrow_forward
- By referring to the periodic table (Figure 2.15 or inside front cover), identify the group and period to which each of the following elements belongs. Then decide whether the element is a metal, nonmetal, or metalloid. a Se b Cs c Fe d Cu e Brarrow_forwardI bought this book of practice problems. Im looking for the formula for Cobalt (II) bromate. It says the answer is Co(BrO3)2 How do you get to that answer? I wrote it as Co3BrO2. But apparently I’m wrong. Can anyone explain it for me? Thanksarrow_forwardAmmonium dichromate is a bright orange, crystalline solid. When heated to a high temperature, one of the decomposition products is a fluffy, dark green solid, called chromium(III) oxide and other materials. What are their respective formulas? Group of answer choices A. NH4(Cr2O7)2, and Cr2O3 B. NH4Cr2O7, and Cr2O3 C. (NH4)2Cr2O7, and Cr2O3 D. NH4CrO4 and Cr3O2arrow_forward
- Fill in the missing information for each of the following 3 neutral isotopes: PS: I only small summary of explanation and rest is answer.arrow_forwardPractice Task/Assessment Complete the table below. ION TYPE OF ELEMENT TYPE OF ION CHARGE 1. Zn+2 2. Cr+3 3. At- Fill in the blanks. For the ionic compound Ag2S, there is/are ___ Ag+ ions and __ S- The total charge of Ag2S is ___. ___ cation and ___ anion formed Potassium iodide (KI). ___ cation and ___ anion formed Potassium chloride (KCl). Write the chemical formula of the ionic compounds formed from the following ions. Potassium and Iodine ions Mg +2 + Br-1arrow_forwardPractice Exercise 2Write the empirical formula for the compound formed by(a) Na+ and PO43-, (b) Zn2+ and SO42-, (c) Fe3+ and CO32-.arrow_forward
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