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What is the mass in grams of MgCI₂ that can be produced from [x]0 moles of Cl₂ gas reacting with excess magnesium? Mg(s) + Cl₂(g) → MgCI₂(s)

A medical laboratory test is run using a [x] µL blood sample. What is this volume in milliliters? Show your work using dimensional analysis.

What would be the charge on an atom of lead which only has 78 electrons?  [sign][magnitude]

There are three isotopes of an element with the following percent abundances; 20X = 19.992 amu (90.51%), 21X = 20.993 amu (0.27%), 22X = 21.991 amu. What is the average atomic mass in amu of X? Show your work and give your answer to 2 decimal places.

The fictional element Chaffium (symbol Ch) makes two oxyanions: ChO3¯ and ChO4¯ What would be the name of ChO4¯? Explain your reasoning. Note: The fictional element name is a Latin word that ends with -ium like many real elements. Just use the same rules as you would with a real element name.

Determine the mass in grams of [x].65 × 10²¹ atoms of barium.

For the reaction CaCO3(s) + 2 HCl(aq) →  CaCl2(aq) + CO2(g) + H2O(l) If 78.1 g solid CaCO3 is mixed with 51.6 g HCl. Which one will be the limiting reactant? Show your work and explain your reasoning.

For the reaction 2 S (s) + 3 O2(g) → 2 SO3(g) If 6.3 g of S is reacted with 10.0 g of O2. Which one will be the limiting reactant? Show your work and explain your reasoning.

What is the correct order of blood to the left upper limb?  

During a colonoscopy, the scope is inserted in reverse order from the anus. As the doctor advances the scope, which of the following structures will be encountered immediately after the rectum?