# Posts by Bubble

Total # Posts: 33

**Math**

i don't know pal

**Geography**

Check britannica.c o m/place/Bhutan

**Physics**

Tom (65 kg) is standing on a scale in an elevator holding an apple. The elevator begins to accelerate downwards at 2.4 m/s2. (c) What is the acceleration of the apple with respect to Tom, after he drops the apple while accelerating? (d) What is the acceleration of the apple if...

**Math**

Whats the question?

**Physics**

Nevermind i got the answer it would be - because the elevator accelerates downward

**Physics**

Jay (65 kg) is standing on a scale in an elevator holding an apple. The elevator begins to accelerate downwards at 2.4 m/s2. What does the scale read during this acceleration? would it be 793 N or 481N? N=m(g-a) OR N=m(g+a)? and why plz!

**Math**

Triangle RST has angles measuring 38° and 75°. Triangle R′S′T′ has angles measuring 67° and 38°. The sides are proportional.. Is it dilation? If not what is it??

**Algebra 2**

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

**Math: Please help**

He's right! 100%

**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 ...

**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 don't 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 couldn't 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 don't 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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