戇戇居士

[匿名]

回覆: 2

2020-10-13 12:33 am

Your answer should have the same number of significant figures as the starting measurement.  3201 mL = cm³?

[匿名]

回覆: 1

2020-10-12 11:58 pm

chemistry help!?

Light

回覆: 1

2020-10-12 4:30 pm

Calculate the heat of reaction for the burning process?

[匿名]

回覆: 1

2020-10-12 4:38 pm

The rate constant for a reaction at 230 ⁰C is found to be exactly twice the value at 220 ⁰C. Calculate the activation energy.?

[匿名]

回覆: 1

2020-09-30 1:07 pm

angle/depth question ?

[匿名]

回覆: 3

2020-09-30 11:39 am

When a group 1 element reacts it?

[匿名]

回覆: 1

2020-09-30 12:38 pm

Not sure how to do this. ?

[匿名]

回覆: 1

2020-09-30 12:18 pm

Chemistry -- Gas Pressure Question?

[匿名]

回覆: 1

2020-09-23 11:48 pm

How many moles are in 1.50 g of ethylamine, CH3CH2NH2? ?

[匿名]

回覆: 3

2020-09-23 10:29 pm

Order these numbers from least to greatest?

[匿名]

回覆: 2

2020-09-23 4:45 pm

Science or chemistry, unsure ?

[匿名]

回覆: 2

2020-09-20 11:17 pm

Chemistry question?

[匿名]

回覆: 3

2020-09-20 10:31 pm

Logarithm Question can someone help me?

[匿名]

回覆: 1

2020-09-20 6:00 pm

What is the proof that the graphite and diamond are different forms of element carbon?

[匿名]

回覆: 1

2020-09-13 11:05 pm

potassium carbide formula?

[匿名]

回覆: 4

2020-09-13 10:56 pm

A sample of mercury with a mass of 114.0g was combined with 17.9g of oxygen gas, and the resulting reaction gave 123.1g of mercury(II)oxide.?

[匿名]

回覆: 2

2020-09-13 9:45 pm

What is the atomic mass of silver?

[匿名]

回覆: 1

2020-09-09 3:46 am

Which compound will have the larger magnitude enthalpy of hydration?

[匿名]

回覆: 3

2020-09-09 2:14 am

Find the gradient of the curve y=e^-3x at the point where it crosses the y-axis.?

[匿名]

回覆: 1

2020-09-09 2:49 am

The density of alcohol is 0.91 g/mL. What volume would 312 g of alcohol occupy?

[匿名]

回覆: 2

2020-09-04 10:45 pm

高二三角函數的的一些題目不會寫?

[匿名]

回覆: 1

2020-09-05 4:06 pm

Let the universal set : U = { 1 , 2 , 3 , . . . , 10 } .Let A = { 1 , 4 , 7 , 10 }, B = { 1 , 2 , 3 , 4 , 5 }, and C = { 2 , 4 , 6 , 8 }. ?

[匿名]

回覆: 5

2020-08-31 11:55 am

What is the pH of acid rain?

[匿名]

回覆: 1

2020-08-31 12:50 pm

Calculus Cross Product?

charles

回覆: 3

2020-08-31 12:14 pm

if a sphere has a volume of 0.0057 m what is its volume in ml?

[匿名]

回覆: 1

2020-08-26 3:37 pm

How much power exists when a power line is carrying a current of 0.50 amp that is being impressed by a voltage of 150,000 volts?

[匿名]

回覆: 1

2020-08-26 12:26 pm

Help With Titration Calculation?

[匿名]

回覆: 2

2020-08-26 6:07 am

The standard-state reduction potential?

[匿名]

回覆: 1

2020-08-08 2:33 pm

Kc and Kp expressions?

[匿名]

回覆: 2

2020-06-01 8:59 pm

Help with Chem ASAP Please Explain?

[匿名]

回覆: 1

2020-06-01 9:00 pm

CHEM HELP ASAP PLEASE EXPLAIN?

[匿名]

回覆: 1

2020-06-01 8:57 pm

CHEM HELP ASAP PLEASE EXPLAIN?

[匿名]

回覆: 2

2020-06-01 7:48 pm

Heat and Energy ?

[匿名]

回覆: 1

2020-06-01 8:27 pm

Physics, Efficiency. ?

[匿名]

回覆: 2

2020-06-01 8:08 pm

boyles law question ?

[匿名]

回覆: 2

2020-05-16 11:17 pm

If the pH = 5.47, calculate the hydronium ion concentration ?

[匿名]

回覆: 1

2020-05-16 6:31 pm

Diazoniom ion help please?

mamool

回覆: 2

2020-05-15 8:31 pm

is the answer vector AB? or is it -AB?

GUY

回覆: 1

2020-05-05 10:17 pm

What of the following are appropriate resonance forms of the anion shown below. Chose all that apply ?

[匿名]

回覆: 2

2020-05-05 9:05 pm

how many mL of ethanol would be required in 225 mL of water to make a 38% ethanol by volume solution?

[匿名]

回覆: 1

2020-05-04 12:01 am

titrating buffers ?

[匿名]

回覆: 1

2020-04-21 10:03 pm

I have a chemistry question on ground state electron configurations?

[匿名]

回覆: 3

2020-04-14 4:04 pm

Need help on probability question?

[匿名]

回覆: 1

2020-04-14 3:32 pm

3. Which solution would have the lowest [OH-]?And why? a. pure water  b. 0.50 M NH3  c. 0.50 M HCl  d. 0.10 M NaOH  e. 0.10 M NaCl ?

[匿名]

回覆: 1

2020-04-14 2:42 pm

chem help?

[匿名]

回覆: 1

2020-04-08 3:54 pm

Chemistry ?? (Synthesis)?

[匿名]

回覆: 1

2020-04-08 3:39 pm

pH Chemistry?

[匿名]

回覆: 1

2020-04-08 3:21 pm

Need help with Chemistry Pls?

[匿名]

回覆: 2

2020-04-06 9:58 am

What is the temperature of 0.62 mol of gas at a pressure of 1.5 atm and a volume of 11.7 L ?

[匿名]

回覆: 2

2020-04-06 10:01 am

The density of a gas is 1.48 g/L at a temperature of 24 ∘C and a pressure of 0.784 atm . Calculate the molar mass of the gas.?