What element is in the 3 rd period and 7th family

At the high temperature at which this reaction takes place, a green-yellow solid may also be formed. Propose a hypothesis about the chemical nature of this product.

What effect does an atibiotic have on an infection like strep throat?

The agricultural practice of spraying insecticides leaves behind which pollutant in the soil? A. Chemical poison B. Excess nitrogen C. Excess salt D. Acidic compounds

Which molecules would most likely cause a liquid to have the lowest viscosity?

How many hydrogen atoms are needed to form five water molecules

Compare and contrast the compounds CH4 and PH3 in terms of covalent bonding, molecular geometry (shape), and intermolecular forces. Which substance would experience a stronger attraction between its molecules, and why?

How do consumers energy

Given that the molar mass of NaCl is 58.44 g/mol, what is the molarity of a solution that contains 87.75 g of NaCl in 500. mL of solution? moles of solute Use molarity - liters of solution

What are 3 ways to seperate metal particles and salt

Sarah heated some orange coloured crystals in a test tube. The crystals turned green and fizzed. After the fizzing stopped, the test tube was allowed to cool. A green powder was left in the tube.