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Questions in chemistry

[Homework Help] 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

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

[Homework Help] 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

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

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

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

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

[Homework Help] Give the definition of heat of neutralization.

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

[Homework Help] 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