Why we using dilute hcl in reaction of lead?

I need 3 examples of role of ATP in the human body.

Calculate your experimentally determined percent mass of water in Manganese (II) sulfate monohydrate. Report your result to 2 or 3 significant figures, e. g. 9.8% or 10.2%.

Which compounds, in the list provided below, have double or triple bonds? LiBr : N2 : CCl4 : AlCl3 : CaCl2 : SiO2 :

Carbon is transferred from seawater to atmosphere through the process of A. diffusion B. excretion C. photosynthesis D. respiration

A 2.7 M solution contains 0 2.7 moles of solute per 1000 g of solvent. 2.7 moles of solute per 1000 mL of solution. 0 2.7 grams of solute per 100 mL of solution. 0 2.7 grams of solute 100 g of solution. per

Which color has a higher frequency, A. red light B. blue light

what is the volume of 0.98 mol oxygen (O2) gas at 275 K and a pressure of 2.0 atm? (the universal gas constant is 0.0821 L*atm/mol*K)

Which element is classified as an alkali metal? Rb Sr Zr Cl

Which statements about a neutral atom are correct? Check all that apply. The positively charged particles in the nucleus are positrons. The radius of the electron cloud is twice as large as the radius of the nucleus.

The STP conditions are ... a) 0C and 1 atm b) 0C and 760 kPa C) 0K and 1 atm d) 0K and 760 kPa