NEED ANSWER ASAP You are asked to make 500. mL of a 0.250 M NaCl solution. How many moles of NaCl would you need?

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Which element would mostly likely have an electron affinity measuring closest to zero

Which of two curves exhibits exponential growth