Thursday
July 24, 2014

Posts by Bubble


Total # Posts: 25

Algebra 2
Can In 5 + log2 10 be written as a single logarithm? Explain.

7th grade social studies Ms.Sue please
Got #2 wrong hahaha

Algebra
simplify the fraction ((4t^2-16)/8)/((t-2)/6) I'm having trouble solving it. I got 3(t+2)

Seismology
How much is the rate of seismic wave energy with distance?

biology
is glycine the most rigid amino acid in collagen

chemistry
A 4.14 m solution of the solute methylene chloride dissolved in the solvent ethanol is available. Calculate the mass ( kg ) of the solution that must be taken to obtain 1487 g of methylene chloride density: CH2Cl2-1327(kg/m^3) C2H5OH-789.3(kg/m^3)

chemistry
A 4.58 m solution of the solute methylene chloride dissolved in the solvent acetone is available. Calculate the mass ( kg ) of the solution that must be taken to obtain 0.8848 kg of methylene chloride. density: CH2Cl2-1.327 (g/mL) (CH3)2CO-0.7899 (g/mL)

chemistry
1.Vapor pressure is the pressure exerted by a vapor when condensation A. < B. = C. > evaporation over its liquid in a closed system. 2.Evaporation is an A. endothermic B. exothermic process, because when a substance evaporates it must A. absorb B. release energy to(from)...

chemistry
can you check my answers(has star next to it) 1. Absolute zero is when T = 0 K. A. true* B. false 2. Molecular motion is neglibible at absolute zero. A. true* B. false 3. Absolute zero is the temperature when P = 0. A. true* B. false 4. Absolute zero is when T = 0C A. true B. ...

chemistry
do we have to include the products that it yields, is it CaBr2Li2C2O4

chemistry
The reaction of aqueous calcium bromide and aqueous lithium oxalate is represented by the balanced net ionic equation. Ca2+(aq) + C2O42-(aq) → CaC2O4(s) Give the balanced formula equation for the reaction. Include the states.

chemistry
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formulas and states of all products. Separate by comma. If there is no reaction, enter the formula and state of all ions in solution. magnesium chloride + silver ni...

chemistry
1)If 746.4 g of a substance is dissolved in 1723 g of benzene solvent, the freezing point of the solution is -9.19 oC. Calculate the apparent molar mass (g/mol) of substance. 2) What mass ( g ) of the solvent water should be mixed with 0.008595 L of the solute ethylene glycol ...

chemistry
The reaction of aqueous cobalt(II) iodide and aqueous lead(II) nitrate is represented by the balanced formula equation. CoI2(aq) + Pb(NO3)2(aq) → PbI2(s) + Co(NO3)2(aq) Give the balanced ionic equation for the reaction. Include the states.

chemistry
which is unnecessary A. The FeCl3solution is acidic and corrosive. Skin contact should be avoided. B. 1M NaOH is basic and corrosive. Skin contact should be avoided C. all of the above

chemistry
Select all cases where the substance shown has a molecular dipole? (HO)2SO2 sulfuric acid CH3CF3 1,1,1-trifluoroethane C4H8 cyclobutane OF2 oxygen difluoride CH3CH2CO2H propionic acid i know OF2 dont have dipole.

chemistry
Calculate the average kinetic energy (J/molecule) for a molecule of an ideal gas at 382 K?

chemistry
1) 15 moles of Ne 10 moles of N2 Enter the mass percent of Ne MM[Ne]=20.18 g/mol, MM[N2]=28.01 g/mol

chemistry
The Rydberg equation (1/lambda=R/ni^2–R/nf^2) can be treated as a line equation. What is the value of nf as a function of the slope (m) and y-intercept(b)? by GC 1/lambda = R/ni^2–R/nf^2 y = mx + b (standard form) of a linear equation) x = (y-b)/m Let, y = 1/lambda m...

chemistry
can u stop trying to trick people. I got the series which is balmer, but i couldnt find the number for nf

chemistry
Given the plot of 1 vs 1ni2, what is the value of nf? y=-0.011x+0.0027 R^2=1 1/n(initial)^2=.04 1/lambda=.0023

chemistry
what is the molecular geometry of IO3- when the angle is 105 degree? i think it means that what is MG of IO3- when angle is set to 105 degrees? Im not really sure

chemistry
what is the molecular geometry of IO3- when the angle is 105 degrees? What is it when the molecular geometry is 120 degrees? Which angle creates the most stable structure with the highest Boltzmann Distribution? Create a lewis structure that agrees with your findings?

physics
An automobile tire is rated to last for 60,000 miles. To an order of magnitude, through how many revolutions will it turn? I dont know what circumference i should use for 1 rev

Science
In a measurement of precipitation (rainfall), a raingauge with an orifice (collector) area of 30.50 in2 collects 1.30 litres of water over a period of 26 minutes and 45 seconds.[10] Calculate: 1) The depth (amount) of rain that fell (in mm). 2) The intensity (mm h-1) at which ...

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