Biology

What information does a molecular formula provide The number and kind of atoms present in a molecule How do atoms achieve noble-gas electron configurations in a single covalent bond Two atoms share two electrons Why do atoms share electrons in covalent bonds To attain a noble-gas electron configuration Which of the following elements conform diatonic …

OH⁻ hydroxide CN⁻ cyanide O₂²⁻ peroxide NH₂⁻ amide N₃⁻ azide

Covalent polar molecule stronger attractions Water has a higher boiling point than expected because of the strong attractions BeCl2 Beryllium, Be, and chlorine, Cl, form a binary ionic compound with a one-to-two ratio of beryllium ions to chloride ions. The formula for the compound is 2 chlorine atoms In the compound MgCl2, the subscript 2 …

Upper Left Where are the most active metals located? Upper Right Where are the most active nonmetals located? Increases. Increased Positive Nuclear Charge. As you go from left to right across a period, the first ionization energy the atomic sizes (decreases/increases)? Why? Increases because of additional principles of energy levels. As you travel down a …

helium, xenon, neon which of the following groups contain three elements with stable electron configurations a stable electron configuration typically, atoms gain or lose electrons to achieve the nucleus and all non-valence electrons in an electron dot diagram, the symbol for an element is used to represent increases from left to right across a period …

created the first periodic table according to increasing atomic mass. Dmitri Mendeleev discovered that the elements in a group would have more similar properties if the elements were organized by increasing atomic number. Henry Moseley the physical and chemical properties of the elements are periodic functions of their atomic numbers. Periodic Law Their lack of …

The number of protons in an atom is different than the atom’s total mass. Dmitri Mendeleev and Henry Moseley developed their periodic tables about forty years apart. During that time, many discoveries in chemistry were made. Which fact was most likely discovered between the time of Mendeleev’s table and the time of Moseley’s table that …

E. Sverdrup The unit of measurement used to describe the rate at which a volume of ocean water moves in a current is a(n) __________. (a) calorie (b) ft/s 2 (c) km/h (d) ml/g (e) Sverdrup A. True Dynamic topography can be used to compute current direction and velocity. (a) True (b) False C. Sun …

replacement water coming from the top to the bottom of the water column downwellingz transport of water to the left or right of the wind direction Ekman transport driven by gravity and modified by the Coriolis force geostrophic flow replacement water coming from the bottom to the top of the water column upwelling Benguela Current, …

1. Synthesizers have always had a well-established presence in standard ensembles. Identify the false statement: 1. Synthesizers have always had a well-established presence in standard ensembles. 2. Synthesis refers to creating sounds electronically from electronically generated waveforms. 3. The synthesizer generates sounds electronically. 4. On the synthesizer, timbre and volume depend on the waveform. It …

F(elastic)= -kd (or just kd) frequency= 1/Time=1/Period Time/period= 1/Frequency V= fλ(wavelength) unit for k N/m unit for wavelength/λ m unit for frequency Hz According to Hooke’s law, the force exerted by a spring on an object is proportinal to a. the mass of the object b. the displacement of the spring c. the length of …

heat The leading weather-related cause of deaths in the United States is: drought Extreme heat is often associated with what other severe weather event? evaporation What is the human body’s primary cooling mechanism? decrease;.increases The rate of evaporation of perspiration from a person’s body __________ as the relative humidity __________. wind direction Which of the …

2.27 ms When a guitar string plats the note “a”, the string vibrates at 440 Hz. What is the period of the vibration? a) 13 cm b) 9.0 cm An air-track glider is attached to a spring. The glider is pulled to the right and released from rest a t = 0 seconds. It then …

Suppose you were to increase the spring constant of a spring by a factor of 4 without changing the mass of the attached block or amplitude of its oscillation. How would the maximum speed of the block be affected? It would increase by a factor of 2 Consider four different systems, each made of a …

A Doppler flow meter is a scientific instrument used to measure current flow rates. True Deep ocean currents are driven primarily by ________ . density differences Which swift-flowing surface current in a major subtropical gyre transports a large volume of warm water from the equator towards mid latitudes? Kuroshio Current Surface currents affect about 90% …

Motion which repeats itself at regular intervals about a mean position Oscillatory Motion Complete execution of a motion Cycle The position of the oscillating body when no unbalanced forces are acting upon it Equilibrium/Mean Position The distance measured from the equilibrium position in a particular position Displacement (oscillation) The magnitude of the maximum displacement Amplitude …

a car driving from New York to San Francisco Which of the following is a good example of linear motion? a.) A tree swaying back and forth in the wind b.) A car driving from New York to San Francisco c.) A minute hand moving around a clock once every hour d.) Earth going around …

B A charged capacitor and an inductor are connected in series. At time t = 0 the current is zero, but the capacitor is charged. If T is the period of the resulting oscillations, the next time after t = 0 that the current is a maximum is: A. T B. T /4 C. T …

movement of water from the top to the bottom of the water column Downwelling net water movement to the left or right of the direction of the wind Ekman transport water flow driven by gravity and modified by the Coriolis force Geostrophic current movement of water from the bottom to the top of the water …

resting with not net force on it equilibrium position restores equilibrium restoring force results of an interplay between the restoring force and the marble’s inertia oscillation period, the time for the motion to repeat Any oscillation is characterized by a __________________________ the time to complete one full cycle period of the oscillation number of cycles …

Sedimentary rocks contain evidence of the crystallization sequence of minerals produced by solidifying magma. if sedimentary rocks account for only about 5% of the earths top 10km, which of the following is NOT a reason why sedimentary rocks are still considered “important” weathering, erosion, deposition, lithification Which of the following lists the correct sequence in …

decreases by a factor of 2 A force F is applied to a spring, resulting in a displacement x. If the magnitude of F is reduced by a factor of 2, then the displacement T/2 A mass is attached to a spring and executes simple harmonic motion. At time t= 0, the object is a …

b. At x = 0 A mass is oscillating on a frictionless surface at the end of a horizontal spring. Where, if anywhere, is the acceleration of the mass zero. a. At x = -A b. At x = 0 c. At x = +A d. at both x = -A and x = +A …

B. T/4 A charged capacitor and an inductor are connected in series. At time t = 0 the current is zero, but the capacitor is charged. If T is the period of the resulting oscillations, the next time after t = 0 that the current is a maximum is: C. T/2 A charged capacitor and …

1) 17 rad/s2 A uniform meter stick is pivoted to rotate about a horizontal axis through the 25-cm mark on the stick. The stick is released from rest in a horizontal position. The moment of inertia of a uniform rod about an axis perpendicular to the rod and through the center of mass of the …