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Question #742bc

Which appear first in the fossil record: Reptiles, amphibians, birds or mammals?

How do you solve #(3x  8) ^ { 2}  6= 58#?

What is the term describing how correct a measurement is?

Question #84767

How is water changing state during evaporation and condensation? Does it start as a solid, liquid or gas? What does it become?

How do nuclear fusion reactions start?

Question #b6b70

What does energy efficiency measure?

A ball with a mass of #4 kg # and velocity of #3 m/s# collides with a second ball with a mass of #5 kg# and velocity of # 7 m/s#. If #20%# of the kinetic energy is lost, what are the final velocities of the balls?

How do you find the max or minimum of #f(x)=1/2x^22x+3#?

For the reaction #"CO"(g) + "NH"_3(g) rightleftharpoons "HCONH"_2(g)#, if #"3.00 atm"# of #"CO"# and #"1.40 atm"# of #"NH"_3# were allowed to react in a closed container, then if #K_p = 2.70# at a certain temperature, what is #P_(HCONH_2)# at equilibrium?

Which acid and which base would you combine to form the salt aluminum sulfate, #Al_2(SO_4)_3#?

Question #0616a

What are differences between natural gas, coal, and oil?

What new countries were formed in Southwest Asia?

What is the sum of 2222 km and 333 km using the correct number of significant digits?

Question #1a6a1

Question #64d8c

Question #8fb72

What is the oxidation number of the ipso carbon in #HC(=O)O^()#?

There are 17 occupied seats on the bus, 11 seats are empty. What s the ratio of number of occupied seats to empty seats?

How do you solve the polynomial inequality and state the answer in interval notation given #4x^4>=3x+1#?

The displacement, d, in millimeters of a tuning fork as a function of time, t, in seconds can be modeled with the equation #d= 0.6sin(3520pit)# What is the frequency of the tuning fork?

Question #7a413

Question #2d8b3

Question #ad38a

Question #49509

Question #32f49

Question #89228

Question #69992

Question #c8443

How could acid rain affect food supplies?

The formula of the compound is #A_2B_5#. The number of electrons in the outermost orbits of A and B respectively are?

Question #fd2d3

Question #bf4d3

Question #6837f

Using a crankshaft, a carpenter drills a hole ,1 cm in radius, through a wooden ball along a diameter. If the radius of the ball is 4 cm, what is the volume of wood remaining? .

In the central nervous system, myelln is formed by cells called what?

What is the groundstate electron configuration of a neutral atom of magnesium?

Question #46dc6

How did the four fundamental forces come to be?

Question #53744

Question #480ac

What factors control where different climates are found?

If a wave is traveling at a certain speed and you cut its frequency in half, what happens to the wavelength?

Question #0a35a

How to find the relative atomic mass?

Question #76a6c

Question #32c5c

A cone has a height of #14 cm# and its base has a radius of #7 cm#. If the cone is horizontally cut into two segments #2 cm# from the base, what would the surface area of the bottom segment be?

How many molecules are in 165 g of carbon dioxide?

How can we curb human population growth?

What is the mode, median and mean of 5, 27, 29, 13, 18, 19, 15, 19, 19, 27, 15, 22, 13, 26, 20?

In reaction:
2H₂O(g)⇌2H₂(g)+O₂(g); ∆H=+242 kJ/mol
In which direction the equilibrium shifts, if:
a. Temperature is increased?
b. Temperature is descreased?
c. H₂ is added?
d. O₂ is reduced?
e. Pressure is enlarged?

Question #b83fb

Why when i add #NaOH# to 1 it give 2 and not 3 ?

What are ecologists trying to figure out by using food webs?

Question #2be51

Question #7eca9

Question #883ac

How do you find the asymptotes for #f(x)=(x+2)/sqrt(6x^2+5x+4) #?

What is the difference between a biome and an ecosystem?

When it is 12 noon in Dallas, what time is it in New York City?

A culture of bacteria is growing at a constant rate of 5% an hour. If the culture started with 3000 bacteria at 6:00 a.m. on Tuesday, calculate the approximate time that the bacteria population will reach 72,000?

What is the enthalpy of reaction at #"373 K"# if the heat capacities are the same at #"273 K"# and we know #DeltaH_(rxn)# at #"273 K"#?

A number in the range of 40 to 70 can be divided by 5 and have a remainder of 2. It can also be divided by 6 and also have a remainder of 2. What's the number?

You can drive your car 21.7 miles with one gallon of gasoline. At that rate, how many miles can you drive with 13.2 gallons of gasoline?

How can GMOs be helpful to humans?

How do you write #30 + 54# as the sum of two numbers times their GCF?

What is the mass of 0.0914 moles of ammonium sulfate?

Question #3c8c1

How much power is produced if a voltage of #8 V# is applied to a circuit with a resistance of #2 Omega#?

Question #ebdd3

Question #b8716

What is the structural formula for 2,3,6 trimethyl, 4 ethyl octane?

What is the oxidation half reaction for #Mg(s) + ZnCl_2(ag) > MgCl_2(ag) + Zn(s)#?

How do astronomers use spectrographs?

Question #a47c8

Who proposed the idea for the League of Nations?

Please how do I round 56.479 cents to the nearest cents?

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