As scientists search the universe for signs of life on other planets they are likely to focus on the presence of molecules containing which of the following elements?

A. carbon

B. calcium

C. iron

D. magnesium

What are two parts of the peripheral nervous system

Ice is lighter and floats in water because it is a crystalline structure in which each water molecule is bonded to a maximum of four other water molecules by which kind of bond?

What is the total number of grams of KCl (formula mass = 74.6) in 1.00 liter of 0.200 molar solution? A) 7.46 g B) 14.9 g C) 22.4 g D) 29.8 g

Which type of radioactive decay produces radiation with zero mass?

Sulfuric acid reacts with aluminum hydroxide by double replacement. if 34 g of sulfuric acid react with 33 g of aluminum hydroxide, identify the limiting reactant.

A change of temperature equal to one kelvin is equal to a change of temperature of how many degrees celsius?

A solution has [h3o+] = 4.2*10-5 m. use the ion product constant of water kw=[h3o+][oh-] to find the [oh-] of the solution.

A. A rapid cooking method that uses high heat from a source located above the food.

What is the number of copper atoms in 1naira coin which weighs 7.39g assuming the material of which the coil is made is 86% copper Na=n/n number of moles/n

Which of the following statements are consistent with Rutherford's nuclear theory as it was originally stated? (A) The volume of an atom is mostly empty space. (B) The nucleus of an atom is small compared to the size of the atom.