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Questions in chemistry

[Terjawab] What is the percent mass/volume of a sodium chloride solution made by dissolving 5.0 grams of sodium chloride in 40.0 mL of solution?

[Terjawab] Stainless steel is an alloy of iron containing 5 percent nickel and 0.175 percent chromium. How many atoms of nickel are present in an 84 g sample of this alloy? Answer in units of atoms.

[Terjawab] Write the balanced equation for the neutralization reaction between HI and Ba(OH)₂ in an aqueous solution. Include physical states.

[Terjawab] What contains 15 neutrons and 13 protons?

[Terjawab] [tex]H_2SO_4 + 2NH_3 \rightarrow (NH_4)_2SO_4[/tex] What mass of ammonium sulfate will result from the reaction of 5.00 g of NH3?

[Terjawab] Describe a procedure to separate a mixture of sugar, black pepper, and pebbles.

[Terjawab] A diorama is a type of model. Marcy built a diorama of a forest. She put small models of trees, birds, and deer in the diorama. She also put rocks and moss on the bottom of her diorama. What does her diorama represent? A. a museum display B. an ecosystem C. an animal D. distances across Earth's surface

[Terjawab] How does the chemical structure of a paper towel differ from that of potatoes?

[Terjawab] What concentration of [tex] \text{SO}_3^{2-} [/tex] is in equilibrium with [tex] \text{Ag}_2\text{SO}_3 \text{(s)} [/tex] and [tex] 3.60 \times 10^{-3} \, \text{M} \, \text{Ag} [/tex]? The [tex] K_{sp} [/tex] of [tex] \text{Ag}_2\text{SO}_3 [/tex] is [tex] 1.5 \times 10^{-14} [/tex].

[Terjawab] Chlorine has two naturally occurring isotopes, Cl-35 and Cl-37. The atomic mass of chlorine is 35.45. Which of these two isotopes of chlorine is more abundant?