不用客氣

[匿名]

回覆: 10

2017-09-02 11:41 pm

Given that 32√2 = 2^a. Find a?

[匿名]

回覆: 1

2017-09-01 10:27 pm

In how many different ways can 6 girls and 6 boys sit if boys don't want to sit next to each other?

[匿名]

回覆: 2

2017-08-31 1:18 am

Write the chemical symbols for three different atomic cations that all have 5 protons.?

[匿名]

回覆: 3

2017-08-30 1:32 pm

Geometry help? 3 questions only? I've uploaded the photo I I v?

[匿名]

回覆: 3

2017-08-30 11:31 am

what important temperatures does the celsius scale use for a basis?

[匿名]

回覆: 5

2017-08-29 12:38 pm

HELP MATH?

[匿名]

回覆: 2

2017-08-28 11:41 am

What is the volume, in ml, of a 1.42565 kg brick of lead if its density is 11.34g/cm^3?

[匿名]

回覆: 2

2017-08-28 12:13 pm

Find f ∘ g ∘ h. f(x) = 2x − 4, g(x) = sin(x), h(x) = x2 Help please!?

[匿名]

回覆: 2

2017-08-26 8:13 pm

Chemistry questions?

[匿名]

回覆: 1

2017-08-25 9:40 pm

Help please, Physics homework ch2?

[匿名]

回覆: 1

2017-08-23 9:10 pm

Find the coefficient of the terms x^-3 and x in the binomial (3x-a/x)^5 using the formula and without expanding?

[匿名]

回覆: 3

2017-08-22 11:37 pm

Graph y = −x^2 + 4x + 5 by plotting the solutions of the equation when x = −2, −1, 0, 1, 2, 3, and 4?

[匿名]

回覆: 1

2017-08-22 12:26 pm

Derive the name of the following complex ions?

[匿名]

回覆: 6

2017-08-20 5:56 pm

Evaluate 0.2175 using the sum of infinite geometric series?

[匿名]

回覆: 1

2017-08-20 9:26 am

How many atoms of oxygen are there in 3.45 x 1023 molecules of H2O.?

[匿名]

回覆: 4

2017-08-19 9:38 pm

(16/y)+(24/x)=4; (24/y)+(18/x)=4.5 find x and y values?

[匿名]

回覆: 3

2017-08-18 10:28 pm

Chemistry question - Normality?

[匿名]

回覆: 5

2017-08-17 1:07 am

Use addition or substitution to find the value of x for this set of equations. x + y = 14 x = 6y?

[匿名]

回覆: 16

2017-08-16 5:30 pm

half of 1/4 cup?

[匿名]

回覆: 3

2017-08-16 11:15 am

A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper?

[匿名]

回覆: 6

2017-08-16 9:47 am

How do I solve the rational equation (2/3x)+(2/3)=(8/(x+6)) ?

[匿名]

回覆: 2

2017-08-16 12:51 am

hydrogen iodide gas of 0.015M and 0.0056M of hydrogen mix. what direction will the reaction proceed?

[匿名]

回覆: 2

2017-08-11 9:21 pm

Help w/Chemistry?

[匿名]

回覆: 2

2017-08-11 8:00 am

Please help! Based on Chemistry on writing a balanced equation?

[匿名]

回覆: 4

2017-08-09 3:20 pm

show that the roots of equation (a + b)x2 -2(a2-b2)x + (a-b)2=0 are equal?

[匿名]

回覆: 1

2017-08-09 12:54 pm

Physics Help?

[匿名]

回覆: 5

2017-08-08 7:44 pm

what method should be used to separate the mixture of water and vinegar?

[匿名]

回覆: 1

2017-08-08 11:03 am

Make a balanced equation for copper carbonate powder into calcium hydroxide. calcium carbonate (precipitate) and carbon dioxide forms?

[匿名]

回覆: 1

2017-08-07 8:28 pm

Why Schiff s reagent can t distinguish between glucose and fructose???

[匿名]

回覆: 6

2017-08-05 12:04 am

calculate the volume of 10^21 molecules at NTP?

[匿名]

回覆: 3

2017-08-04 12:17 pm

The density of Nitrogen is 1.25kg/m^3, at STP determine the density of nitrogen at 42 degres celcius and 730mmHg?

[匿名]

回覆: 1

2017-08-01 11:44 am

25.00 mL of a solution containing 10.0 g/L of an unknown acid is titrated?

[匿名]

回覆: 3

2017-07-29 12:47 am

The half-life of Yttrium-91 is 59 days. How much of a 4.11 g sample of Yttrium-91 will remain after 354 days?

[匿名]

回覆: 2

2017-07-28 1:27 pm

Calculate e-cell for the reaction?

[匿名]

回覆: 1

2017-07-25 11:46 pm

chemistry help please much appreciated :)?

[匿名]

回覆: 1

2017-07-25 10:00 pm

Need chemistry help?

[匿名]

回覆: 2

2017-07-25 4:29 pm

How do you covert (α−β)^2 in terms of sum and product of roots? (Sum = α+β, Product = αβ)?

[匿名]

回覆: 1

2017-07-25 8:50 am

Calculate the pH of a 0.095 M solution of HCN at 25 °C. [Ka for HCN (aq) = 4.9 x 10-10].?

[匿名]

回覆: 2

2017-07-24 11:04 am

Help with naming O-Chem using IUPAC?

[匿名]

回覆: 3

2017-07-20 12:35 am

Imhavng trouble understanding this simple chemistry mcq?

[匿名]

回覆: 1

2017-07-19 8:29 am

Specific heat question help?

[匿名]

回覆: 4

2017-07-18 12:59 pm

How can we differentiate between alcohol and ether by chemical tests?

[匿名]

回覆: 7

2017-07-16 12:22 am

Against the wind a plane travels 5600 km in 7hrs. With wind the plane travels 8160 km in 8 hrs. rate in still air and rate of wind?

[匿名]

回覆: 1

2017-07-15 9:40 pm

help please?

[匿名]

回覆: 3

2017-07-15 10:27 am

NEED HELP?

[匿名]

回覆: 2

2017-07-07 9:57 am

Chemistry Help, please??

[匿名]

回覆: 2

2017-07-06 3:06 pm

An artifact was found to have an original amount of Carbon-14 of 12 grams. how many grams of Carbon-14 remain after 5000 years?

[匿名]

回覆: 2

2017-07-03 10:07 am

How many liters of O2 at 298 K and .9869atm are produced in 3.25 hr in an electrolytic cell operating at a current of 0.0300 A?

[匿名]

回覆: 2

2017-06-09 1:19 pm

What volume of 1.00M sodium hydroxide solution is needed to titrate 10.0 mL of 0.143 M H3PO4 solution?

[匿名]

回覆: 1

2017-06-07 12:25 am

How large is the force of friction over the box ?