Which of the following groups has a charge of +2?

Milikan’s Oil drop experiment showed that ___.

Find the dealerships that beat their 2018 units target. For each, show the actual units sold in 2018, the units_target, and the variance (actual minus target), highest variance first.Hint: build 2018 actual units per dealership in a CTE (a COUNT of sales, dealership_id cast to int), join it to dealership_targets on dealership_id and target_year = 2018, then keep only the dealerships whose actual units exceed the target. This is the toughest problem here — chain it in named steps and test each one on its own before assembling.

What is the name of  MgCl2?

What is the name of the acid,  HF?

For each product_type, return the top 3 products by total revenue. Show product_type, model, revenue, and the within-type rank.Hint: build per-product revenue in a CTE, then RANK() OVER (PARTITION BY product_type ORDER BY revenue DESC), and keep rank

For each sale, show the sales_amount alongside the average sales_amount for that product’s product_type, so each row can be compared to its type’s average. Do not collapse the rows.Hint: AVG(…) OVER (PARTITION BY product_type).

Gender is stored as a single letter. Produce a clean breakdown that labels each customer ‘Male’, ‘Female’, or ‘Unrecorded’, and count how many fall into each label.

Which of the following best explains the difference between commodity money and fiat money?

The economy is currently experiencing a