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How many electrons are there in 15N3−?

Which of the following correctly lists the elements helium, neon, and argon in order of increasing first ionization energy?

Strong acids are _____.

Victor bought one April 60 IBM call with the premium being $1/share, and sold one April 60 IBM put with the premium being $2/share. What’s his total profit/loss at expiration date if IBM stock price is $65/share?

According to Dalton’s atomic theory, which of the following pairs of diagrams of arrangements of atoms is consistent with a chemical reaction? Before ReactionAfter ReactionI.II.III.IV.

Consider the reaction CH4(g) + H2O(g) → 3 H2(g) + CO(g). If 2.25 L of methane, measured at STP, react, how many liters of hydrogen will be produced if it is also measured at STP?

Calculate the molar mass of ammonium sulfide, (NH4)2S.

The set is a basis for  Find the coordinate vector of relative to  , where: [c1] [c2] [c3]  

In the following equation, what is the coefficient of oxygen (O2) when the equation is balanced?​_____ C3H8 + _____ O2 → _____ CO2 + _____ H2O​

Complete parts (a) and (b) for the matrix below.