# Posts by md

Total # Posts: 19

**Math**

If two fair dice are rolled, what is the probability that a total showing is either even or less than eight? Thanks for your help

**MATH**

0*0=0 0/0=0 0/1=0 1/0=0 ARE ALL CORRECT? THEN HOW

**scince**

Carbon tetrachloride reacts at high temperatures with oxygen to produce two toxic gases, phosgene and chlorine. CCl4(g) + 1/2O2(g) COCl2(g) + Cl2(g), Kc = 4.4 × 109 at 1,000 K Calculate Kc for the reaction 2CCl4(g) + O2(g) 2COCl2(g) + 2Cl2(g).

**Power circuit theory**

A three phase fully transposed transmission line ha s solid conductors of 2 cm diameter, spaced at distances between centres of 3.65 m, 5.5 m and 8.2 m. Determine the inductance of the complete line per km.

**Chemistry**

Balanced equations..done? Is each reaction a redox reaction? For those reactions that are redox reactions, I must identify the substance being oxidized and the substance being reduced... (a) Zn(s) + CoCl2 (aq) ---> ZnCl2 (aq) + Co(s) (b) HI(aq) + NaOH(aq) ---> H2 O(l) + ...

**Chemistry**

Which of the following are requirements for anionic polymerization? a)A double bond b)End groups which can react by releasing a small molecule c)A strong base to initiate the reactionA strong acid to initiate the reaction d)An electron-withdrawing group near the double bond ...

**statistics**

The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 410 grams and a standard deviation of 10 grams. Find the weight that corresponds to each eventa. A.Highest 30 percent b. Middle 70 percent to c. Highest 90 percent d. Lowest 20 ...

**math**

A cliff on the bank of a river is 300m high if angle of deprssion of a point on the oposite side of the river is 60 digree find the wigth of the river

**precalculus**

if f(x)=2x and g(x)= x+1 , what do you think someone means by (f+g)(x)? what about (f/g)(x)?

**chemistry**

so am I treating density as Sp. heat?

**chemistry**

25.6 {\rm mL} of ethanol (density =0.789 {\rm g}/{\rm mL}) initially at 8.0^\circ {\rm C} is mixed with 39.5 {\rm mL} of water (density = 1.0 {\rm g}/{\rm mL}) initially at 23.1^\circ {\rm C} in an insulated beaker. Assuming that no heat is lost, what is the final temperature ...

**From Theory To Practice**

1.a 2.b 3.d 4.a 5.b 6.c 7.a 8.? 9.c 10.a 11.a 12.? 13.? 14.? 15.c 16.d 17.a 18. b 19. D 20.c

**physics (Mathmate)**

The space shuttle is in a 250 mile high orbit. What are the shuttle's orbital period, in minutes and its speed?

**physics**

A 1.6 kg disk with radius 0.63 m is rotating freely at 55 rad/s around an axis perpendicular to its center. A second disk that is not rotating is dropped onto the first disk so that their centers align, and they stick together. The mass of the second disk is 0.45 kg and its ...

**Physics**

thnks so much

**Physics**

A skier of mass 64 kg starts from rest at the top of an 18° slope, points her skis straight down the slope and lets gravity pull her down the slope. The slope is 65 m long. Her speed at the bottom is 15 m/s. (a) Assuming zero air resistance, what is the magnitude of the ...

**Biology**

What molecules cycle between the light and light independent phase of photosynthethis?

**Biology**

what molecules cycle between the light dependent and light independent stages of photosynthethis

**chemistry**

planar

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