This week's challenge: look around your house for a solution that has its percent concentration listed on the container. For household cleaners and food, the concentration is typically listed on the bottom of the front label. For medicinal and cosmetic solutions the concentration is typically listed on the back label. Assume this is percent concentration by volume (% m/v) Post the name of the solution and its concentration. Do not use something someone else already posted. You know the percent by volume, which means you now have a conversion factor of grams per 100 mL (g substance/ 100 mL). Look at the label again to see how many mL it contained before you opened it. Include in your post, 1) the solution's name 2) percent concentration from the label 3) volume unopened 4) your estimate for grams in the unopened container

Consider the following unbalanced equation: $N_{2}(g)+H_{2}(g)\rightarrow NH_{3}(g)$ How many moles of $H_{2}$ will be required to react exactly with 3.83 mol $N_{2}$ HOW DO WE GET THERE? What is the balanced equation for this reaction (in lowest multiple integers)? $\square N_{2}(g)+\square H_{2}(g)\rightarrow \square NH_{3}(g)$

The atomic number of beryllium (Be) is 4, and the atomic number of barium (Ba) is 56.Which comparison is best supported by this information? They are in the same group because they have similar atomic masses but they are in different periods because they have different chemical properties. They are in the same group because they have similar chemical properties but they are in different periods because they have very different atomic numbers. They are in the same group because their atomic numbers are each multiples of four, but they are in different periods because they have different chemical properties. They are in the same group because they have similar atomic masses but they are in different periods because they have very different atomic numbers.

All organic compounds contain: Alkene Carbon Chlorine Nitrogen

Which best compares and contrasts how John Newlands and Dmitri Mendeleev organized eleme Both Newlands and Mendeleev arranged elements according to their chemical properties, but used atomic mass as well. Both Newlands and Mendeleev arranged elements according to their atomic masses, but only chemical properties as well. Both Newlands and Mendeleev organized elements into groups, but only Newlands used a tak columns. Both Newlands and Mendeleev organized elements into a table with rows and columns , but ol named different groups of elements.

Choose the proper coefficients for each substance to balance this equation. $\underline {\quad }C_{2}H_{4}(g)+\underline {\quad }O_{2}(g)\rightarrow \underline {\quad }CO_{2}(g)+\underline {\quad }H_{2}O(g)$ 2,3,4,2 2.2.4.2 1,3,2,2 1,1,2,2

Which term refers to the number of protons in an atom of an element? atomic number period average atomic mass symbol

The following chemical reaction takes place in aqueous solution: $FeBr_{2}(aq)+(NH_{4})_{2}S(aq)\rightarrow FeS(s)+2NH_{4}Br(aq)$ Write the net ionic equation for this reaction.

Which polyatomic ion formula and name is NOT correctly paired? 1. $CN^{-}$ cyanate 2. $NO^{-}$ nitrate 3. $ClO^{-}$ chlorate 4. $SO42^{-}$ sulfate 5. $CrO42^{-}$ chromate

How many atoms would be in 3 moles of Oxygen? (3) $(6.02\times 10^{24})$ of 0 atoms (2) $(6.02\times 10^{23})$ of 0 atoms (3) $(6.02\times 10^{23})$ of 0 atoms (4) $(6.02\times 10^{23})$ of 0 atoms

__ is/are types of chemical reaction. Synthesis reaction Redox reaction Precipitation reaction All of the choices