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Chemistry
Consider the following equation: Mg(s)+2H₂O(l)→Mg(OH)₂(s)+H₂(g). Find the volume of H₂ produced at STP by the reaction of 76.4 g of magnesium. *
Chemistry
A flywheel of radius 14 in is rotating at the rate of 1000 rpm. How fast does a point on the rim travel in fps?
Chemistry
What is the mass of an atomic number of 8 and 8 neutrons
Chemistry
The radioisotope cesium-137 has a half life of 25.00 years. A sample decays at a rate of 192.0 counts per minute (192.0 cpm) in the year 2000. In what year will the decay rate be 3.000 cmp?
Chemistry
A 0.1036-g sample containing only BaCl2 and NaCl is dissolved in 50 mL of
distilled water. Titrating with 0.07916 M AgNO3 requires 19.46 mL to reach the
Fajans endpoint. Report the %w/w BaCl2 in the sample.
distilled water. Titrating with 0.07916 M AgNO3 requires 19.46 mL to reach the
Fajans endpoint. Report the %w/w BaCl2 in the sample.
Chemistry
According to the following equation, how many moles of aluminum are needed to form 3.7 mol Al2O3?
4Al + O2
4Al + O2
Chemistry
WHAT IS THE MOLALITY (m) OF A 250 g OF SOLUTION THAT CONTAINS 7.3 GRAMS OF GLUCOSE C6H12O6? WHAT IS THE MOLECULAR WEIGHT OF SOLUTE?
Chemistry
Mercury has a specific heat of 0.140 J/g ? 8C. Assume that a thermometer
has 20 (2 significant figures) grams of mercury. How much heat is absorbed by
the mercury when the temperature in the thermometer increases from 98.68F
to 103.28F? (Assume no heat loss to the glass of the thermometer.)
has 20 (2 significant figures) grams of mercury. How much heat is absorbed by
the mercury when the temperature in the thermometer increases from 98.68F
to 103.28F? (Assume no heat loss to the glass of the thermometer.)
Chemistry
A 90.00 g sample of Na₂CO₃⋅xH2O is heated until all of the water is driven off, forming 0.314 mol of the anhydrous salt, Na₂CO₃. The molar mass of Na₂CO₃ is 105.99 g/mol. What is the percent by mass of H2O in the hydrated compound, Na₂CO₃⋅xH2O?
Chemistry
Chemical formular of copper II trioxocarbonate IV
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#340153 on Dec 2023
#340153 on Dec 2023