What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 800 mL of H2O?

For the following systems (as underlined), determine which of the following conditions apply: open, closed, adiabatic, isolated, isothermal, isobaric, isochoric, or steady-state. a.

Which substances will make a salt when combined? A. Vinegar and soda B. Soda and wine C. Detergent and ammonia D. Fertilizer and vinegar

How many moles of br2 (l) (mm = 159.80 g/mol) are in 13.9 ml of liquid bromine? the density of br2 (l) is 3.12 g/ml?

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Pulling a item from the other person and fighting over it is what science def?

What is represented in an electron dot diagram

In a first order reaction, what fraction of the reactant will remain after 4 half-lives?

Which trends are observed when the elements in Period 3 on the Periodic Table are considered in order of increasing atomic number? (1) The atomic radius decreases, and the first ionization energy generally increases.

The enthalpy of formation of MX is ΔHf° = - 525 kJ/mol. The enthalpy of sublimation of M is ΔHsub = 139 kJ/mol. The ionization energy of M is IE = 437 kJ/mol. The electron affinity of X is ΔHEA = - 313 kJ/mol. (Refer to the hint).

Which group of elements could you not use in making fireworks?