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Questions in chemistry

[Terjawab] 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.

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

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

[Terjawab] 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]

[Terjawab] How many atoms are present in 7.0 moles of Ca?

[Terjawab] A graduated cylinder is filled to 10.1 cm3 with water and a piece of silicon dioxide is placed in the cylinder, displacing the level to 24.6 cm3. What is the volume of the silicon dioxide piece in cubic centimeters?

[Terjawab] The following reaction: [tex]$A \rightarrow B+C+\text { heat }$[/tex] is a(n) __________ reaction. A. endergonic B. dehydration synthesis C. exergonic D. anabolic E. exchange

[Terjawab] How many atoms are present in 7.0 moles of Ca?

[Terjawab] 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 temperature. [tex]\frac{P_1 V_1}{T_1}=\frac{P_2 V_2}{T_2}[/tex] [tex]T_2=\frac{A}{B}[/tex] Numerator $(A)$: P_2 V_2 T_1 Denominator $(B)$: P_1 V_1

[Terjawab] Which of these reactions requires a net input of energy from its surroundings? exergonic catabolic ATP $\rightarrow$ ADP $+P$ hydrolysis endergonic