Which is the correct symbol for the atom with 42 protons and 49 neutrons?

87/The alcohol content of hard liquor is normally given in terms of the "proof," which is defined as twice the percentage by volume of ethanol (C2H5OH) present. Calculate the number of grams of alcohol present in 1.00 L of 87-proof gin.

Which is the correct interpretation of the formula MgF2?

21st Century Literature

A student pushes a box with a total mass of 50 kg what is the net force omn the box if it accelerates 1.5 m/s squared

How many milliliters of 0.02 M HCl are needed to react completely with 100 mL of 0.01 M NaOH? A) 200 mL B) 100 mL C) 75 mL D) 50 mL E) 25 mL

Which statements are true about the linear inequality y > x - 2? Check all that apply

How is the Gobi Desert different from the Sahara Desert

Which average wind speed do areas need to effectively power wind farms? A:1 mph B:5 mph C:10 mph D:16 mph

What is the total number of moles represented by 20 grams of CACO3 A. 0.1 B. 0.2 C. 1 D. 2

Which describes the polarity in a water molecule? a). partial negative charge on the oxygen atom because its electrons are pulled toward the hydrogen atoms b).