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Questions in chemistry

[Answered] If the solubility of a salt is 40, what gram of solvent is required to dissolve 60 gm of the salt? A. 100gm B. 150gm C. 40gm D. 60gm

[Answered] Which polyatomic ion is $SO_4{ }^{2-}$? A. sulfate B. sulfite C. sulfide D. sulfurate

[Answered] The half-life of an isotope known as colbalt-60 is 5.26 years. What is the decay factor of this substance? (Hint: use the equation [tex]$y=c a^x$[/tex]) A. 0.877 B. 2.000 C. 0.026 D. 1.140

[Answered] It is important that you always use a clean stirring rod when dropping samples onto the pH indicator paper. True or False

[Answered] How would you explain the difference between -ide, -ate, and -ite endings? For example, how are nitride, nitrate, and nitrite different?

[Answered] Which element would most likely have an electron affinity measuring closest to zero? A. Na B. Ar C. Rb D. Ar

[Answered] Which state of matter has no definite shape or volume and expands to fill its container completely? A. solid B. liquid C. gas

[Answered] Give the definition of heat of neutralization.

[Answered] The initial pH of distilled water is close to 1 (highly acidic). True or False

[Answered] Who is responsible for providing and maintaining Safety Data Sheets, or SDSs, for all hazardous chemicals in your workplace? A. Your supervisor B. Your employer C. The chemical supplier D. All of the above