Chemistry Homework Assistance

QuestionAI's chemistry problem solver is a middle school chemistry tutoring tool that summarises key chemical reactions and equations in real-time, featuring a robust learning system to empower even those with a weak foundation in chemistry.

You needn't fret over the elemental properties of the periodic table anymore. Here, you can effortlessly access chemical reactions and reaction principles corresponding to each element. Deductive reasoning from microscopic phenomena to discern the original structure of molecules and atoms is a research technique we staunchly champion.

7. Which of these is a redox reaction? CaO+SiO_(2)arrow CaSiO_(3) B H_(2)SO_(4)+Na_(2)Oarrow Na_(2)SO_(4)+H_(2)O C NaBr+H_(2)SO_(4)arrow NaHSO_(4)+HBr D Mg+Sarrow MgS

NEON has 2 ISOTOPES of differing mass and in different proportions shown below. Which option demonstrates how we calculate its relative atomic mass (A_(r)) in g/mol {}^20Ne:91% {}^22Ne:9% ((91+9)times (20+22))/(100)=42 ((91times 9)+(20times 22))/(100)=12.6 ((91+20)times (9+22))/(100)=7.11 ((91times 20)+(9times 22))/(100)=20.2

What is the relative atomic mass (A_(r)) of COPPER? {}^63Cu:70% {}^65Cu:30% ((70+63)times (30+65))/(100)=126.35 ((70times 30)+(63times 65))/(100)=61.95 ((70times 63)+(30+65))/(100)=128 ((70times 63)+(30times 65))/(100)=63.6

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The table shows the relative atomic masses of some common elements. Use this information to work out the relative formula mass of the compound with the formula shown below the table. Enter a number Element & Relotive atomic mass hydrogen & 1 carbon & 12 nitrogen & 14 oxygen & 16 sodium & 23 magnesium & 24 phosphorus & 31 sulfur & 32 chlorine & 35.5 calcium & 40 iron & 56 [ mathrm(Ca)_(3)(mathrm(PO)_(4))_(3) ]