IdeasCuriosas - Every Question Deserves an Answer Logo

Questions in chemistry

[Answered] Define the following terms: 1.1.1 Galvanic cell. 1.1.2 Electrolytic cell. 1.1.3 Oxidation in terms of electron (e-) transfer. 1.1.4 Reduction in terms of electron (e-) transfer. 1.1.5 Oxidation in terms of oxidation numbers. 1.1.6 Reduction in terms of oxidation numbers. 1.1.7 Oxidising agent in terms of oxidation and reduction. 1.1.8 Reducing agent in terms of oxidation and reduction.

[Answered] Dimensional Analysis Elephant toothpaste Recipe Consider the following recipe for elephant toothpaste. Use it to help answer the question. How many milliliters of 3% hydrogen peroxide are needed to make 7 liters of elephant toothpaste solution? 350 mL of 3% hydrogen peroxide 100 milliliters 15 g of dry yeast 15 g of dish soap 236 mL of water Yields: 2 L elephant toothpaste solution A. 1,225 milliliters B. 1,523 milliliters C. 503 milliliters

[Answered] The balanced chemical equation for the reaction of copper $(Cu)$ and silver nitrate $(AgNO_3)$ is shown below. $Cu + 2AgNO_3 \rightarrow 2Ag + Cu(NO_3)_2$ How many moles of copper must react to form 3.50 mol of Ag? A. 0.175 mol B. 1.75 mol C. 7.00 mol D. 17.0 mol

[Answered] What is carbon? A. an organism B. an element C. a compound

[Answered] The balanced chemical equation for the reaction of hydrogen and oxygen is shown below. [tex]2 H_2+O_2 \rightarrow 2 H_2 O[/tex] The number of moles of hydrogen that is needed to produce 0.253 mol of water is A. smaller than 0.253 mol. B. much greater than 0.253 mol. C. slightly greater than 0.253 mol. D. equal to 0.253 mol.

[Answered] The balanced equation below shows the products that are formed when butane $\left( C _4 H _{10}\right)$ is combusted. $2 C_4 H_{10}+13 O_2 \rightarrow 8 CO_2+10 H_2 O$ What is the mole ratio of butane to carbon dioxide? A. 2:8 B. 1:5 C. 13:8 D. 13:10

[Answered] A person drags a 10kg package along by applying a force of 40N at a 30 degree angle. a. Calculate the net force that will accelerate the package. b. Calculate the horizontal acceleration in m/s of the package. c. Calculate the magnitude of the force applied by the floor. d. Give a reason why the magnitude is slightly less than the weight of the package.

[Answered] Where is the best place to find detailed information about a hazardous chemical that is used in your work?

[Answered] Which of the following would have a permanent dipole force? A. CH B. H₂O C. F2 D. Sg

[Answered] Using the combined gas law below, identify the variables that would be in the numerator $(A)$ and denominator $(B)$ if you were to rearrange the gas law to solve for final pressure. [tex]\frac{P_1 V_1}{T_1}=\frac{P_2 V_2}{T_2}[/tex] [tex]P_2=\frac{A}{B}[/tex] Numerator $(A)$: [tex]P_1 V_1 T_2[/tex] Denominator $(B)$: [tex]T_1 V_2[/tex]