fooks

[匿名]

回覆: 3

2020-04-07 11:13 pm

What is the element with the abbreviated electron configuration [Ar] 4s2?

[匿名]

回覆: 2

2020-04-07 11:13 pm

The electron configuration of a ground-state copper atom is?

[匿名]

回覆: 1

2020-04-03 10:29 pm

Match the names of the products for the following reactions.?

[匿名]

回覆: 1

2020-04-03 10:11 pm

In a particular redox reaction, NO is oxidized to NO − 3 and Cu 2 + is reduced to Cu + PLEASE HELP?

[匿名]

回覆: 1

2020-04-03 10:14 pm

Calculate the molarity of the solution if 10.0 ml of 0.020 molar stock dilute to 25.0 ml?

[匿名]

回覆: 1

2020-04-03 9:45 pm

chem help?

[匿名]

回覆: 8

2019-10-12 7:10 pm

Find the equation of the line that passes through (1,3) and is perpendicular to y=1-2x Leave your answer in the form y=mx=c?

[匿名]

回覆: 1

2016-06-30 8:48 pm

5)zinc sulfate + sodium carbonate 6)lead (II) nitrate + sodium chromate 7)nickel (II) nitrate + sodium hydroxide?

[匿名]

回覆: 3

2016-06-25 9:50 pm

Simplify 2sin(x/2)cos(x/2) by using the half angle identity?

[匿名]

回覆: 1

2016-06-25 8:53 pm

Functional groups?? Please help!!!?

[匿名]

回覆: 2

2016-06-25 8:55 pm

Select the pairs of elements that would be expected to have similar properties and reactivity?

[匿名]

回覆: 1

2016-06-25 8:22 pm

http://i64.tinypic.com/23hvss8.jpg - Question 2 why is the answer (c)..?

[匿名]

回覆: 1

2016-06-25 6:39 pm

How do you work this thermodynamics question out?

[匿名]

回覆: 6

2016-06-25 6:04 pm

Spectator Ions?

[匿名]

回覆: 1

2016-06-25 1:22 pm

f(x)=ax^5+bx^3+cx-1已知f(-5)=8,則f(5)=?

[匿名]

回覆: 1

2016-06-25 1:28 pm

(國中理化問題) 急~謝謝?

[匿名]

回覆: 1

2016-06-25 1:29 pm

f(x)=ax^5+bx^3+cx-1已知f(-5)=8,則f(5)=?

[匿名]

回覆: 3

2016-06-25 5:12 pm

In a redox reaction:H2 + F2 =2HF, the number of electrons involved in the conversion is 1. 0 2. 2 3. 4 4. 5?

[匿名]

回覆: 4

2016-06-25 5:13 pm

When copper oxide is heated with hydrogen, copper metal and water are formed. What happens to the Hydrogen in this reaction?

[匿名]

回覆: 30

2016-06-25 5:06 pm

how many meters in 60ft?

[匿名]

回覆: 2

2016-06-25 4:40 pm

If I have a 10,000 gallon pool at 70degrees F and add 350 gallons at 100 degrees F what will the resulting temp be of the 10,350 gallons?

[匿名]

回覆: 3

2016-06-25 4:42 pm

net ionic equation for ASCl3 + 3 H2O = 3 HCl + AS(OH)3?

[匿名]

回覆: 6

2016-06-25 4:47 pm

How many atoms of copper are in an old penny made of pure copper and weighing 2.15 g?

[匿名]

回覆: 20

2016-06-25 4:48 pm

Differentiate y=4x+1/x?

[匿名]

回覆: 10

2016-06-25 2:48 pm

Given that a and 2a are the roots of the equation 8x^2 + kx + 9 = 0, find the value of a and k. Please help with full solutions )):?

[匿名]

回覆: 13

2016-06-25 4:16 pm

what does 80 grams convert to ounces?

[匿名]

回覆: 3

2016-06-25 3:54 pm

The roots of the quadratic equation 2x^2 - ax + 3 = 0 (where a >0) are a and b, while those of the equation....?

[匿名]

回覆: 2

2016-06-25 3:44 pm

The roots of the equation 3x^2 + 5x + 1 =0 are a and b while the roots of the equation hx^2 - 4x + k =0 are a+3 and b+3. Find values of h&k?

[匿名]

回覆: 26

2016-06-25 3:46 pm

what is: +51 + (−50) + (+49) + (−48)?

[匿名]

回覆: 1

2016-06-25 12:44 pm

How would I work out the total number of ions in 25cm3 of a 0.05 mol dm3 solution of na2so4 using avogadros constant (6.02 X 10^23)?

[匿名]

回覆: 5

2016-06-25 12:12 pm

how we distinguish CH3CH2OH and CH3OCH3?

[匿名]

回覆: 23

2016-06-25 12:23 pm

who can solve this x4-144=0?

[匿名]

回覆: 1

2016-06-25 9:39 am

speed of a transverse wave?

[匿名]

回覆: 2

2016-06-25 9:40 am

What is the frequency of a wave that has a speed of 340 m/s and a wavelength of 1.7 m?

[匿名]

回覆: 8

2016-06-25 8:37 am

prove that difference and quotient of (3+2√3) and 3-2√3) are irrational.?

[匿名]

回覆: 63

2016-06-25 8:54 am

1 pint is equal to how many ml.?

[匿名]

回覆: 3

2016-06-24 8:33 pm

thirty percent of 0.1?

[匿名]

回覆: 4

2016-06-24 7:32 pm

Ratio problem.?

[匿名]

回覆: 2

2016-06-24 8:12 pm

What is the balanced eqn for the synthesis of isopentyl acetate?

[匿名]

回覆: 3

2016-06-24 7:38 pm

can someone pls explain factorials i have a test in one hour and i dont get it how is (n+1)!=(n+1)n!??

[匿名]

回覆: 4

2016-06-24 7:38 pm

If I'm paid $9/hr, how much do I get paid for 45 minutes?

[匿名]

回覆: 2

2016-06-24 7:47 pm

Please help me to solve this question. Thanks.?

[匿名]

回覆: 2

2016-06-24 4:29 pm

The sum of two point charges is 9 μC. They repel each otherforce of 2 N when kept 30 cm apart in free spaceCalculate thevalue of each charge?

[匿名]

回覆: 1

2016-06-22 2:13 pm

理化大師幫我解答一下我的困惑?

[匿名]

回覆: 2

2016-06-24 6:58 am

If one mole of X2O contains the same number of atoms as 75g of XO3, the molar mass of X2O is?

淑玲

回覆: 3

2016-06-24 3:13 pm

1已知解方程式㏒2(x+a)=㏒4(11x+b)可得x=2或x=3，求數對(a，b).其中未括號的2和4為底數.?

[匿名]

回覆: 1

2016-06-24 2:48 pm

An object of mass 0.56 kg is attached to a horizontal spring, with spring constant 50.0 N/m.?

[匿名]

回覆: 4

2016-06-24 2:46 pm

Let F(x)=x^2-x-y and G(x)=2x+8 Find G(6) and f(g(6)).?

[匿名]

回覆: 3

2016-06-24 2:35 pm

a) Implicitly differentiate tan(x^7* t^6) with respect to x, given that dt/dx = v.?

[匿名]

回覆: 1

2016-06-24 2:29 pm

Chem Homework Help? Really stuck on this?