In a laboratory 0.500 moles of NAOH is completely dissolved in distilled water to form 400.0 mL of NAOH. The solution is then used to titrate a solution of HNO3.

Which answer choice correctly completes the equation by filling in the formulas of the products in this titration reaction?

NaOH(aq) + HNO3(aq) —> —————- + —————-

1: NaNO2(aq) + H2O2(L)

2: NaNO3(aq) + H2O(L)

3: HNaNO3(aq) + OH(L)

4:H2NO3(aq) + NaO(L)

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves