Roger the Mole

[匿名]

回覆: 3

2020-04-15 11:47 pm

If Oxygen gas occupies 40.0 mL at 100°C. What would the volume be at 50°C? ?

[匿名]

回覆: 5

2020-04-11 2:32 am

What are some poisons/toxins that are dangerious to animals but not humans? ?

[匿名]

回覆: 2

2020-04-07 1:45 pm

Mole of HCl and NH3. Reacted Chemistry ?

[匿名]

回覆: 3

2020-04-07 1:48 pm

calculate standard enthalpy change for reaction?

[匿名]

回覆: 4

2020-04-06 8:42 pm

How to decrypt the following cipher text using frequency analysis?

[匿名]

回覆: 3

2020-04-06 12:29 am

Chemistry help please? ?

[匿名]

回覆: 2

2020-04-03 12:24 pm

chem help pls ?

[匿名]

回覆: 1

2020-04-01 2:28 am

How to do this easy physics/ chem question? (URGENTTTT)?

[匿名]

回覆: 3

2020-03-04 6:33 am

Question for animal experts. What were pterosaurs?

[匿名]

回覆: 5

2020-02-29 6:46 am

chemistry help?

[匿名]

回覆: 3

2020-02-07 6:01 am

Is there a robot that picks noses?

Ka Lun

回覆: 1

2020-01-23 11:09 am

化學元素週期表上的未知元素是否未被發現？

[匿名]

回覆: 1

2019-09-30 11:01 am

Error propagation of van't hoff equation?

[匿名]

回覆: 2

2019-09-30 5:56 am

What gas is produced when food is put in a deep fryer?

[匿名]

回覆: 3

2019-08-10 3:11 am

Check my Science Homework?

[匿名]

回覆: 1

2019-07-20 4:52 am

有人知道{磷} 的 光譜嗎？我找不到資料?

[匿名]

回覆: 2

2019-07-01 1:10 pm

Help with a few biology questions.?

brown

回覆: 3

2019-06-21 7:37 pm

這題的氫爲什麼是14個？怎麼算？

[匿名]

回覆: 1

2019-05-30 9:51 pm

25cm3的0.120M氫氧化鈉被30.00cm3某二元酸H2X的溶液完全中和,每該溶液含有6.30g酸.計算 a.酸溶液的摩爾濃度 b.酸的摩爾質量?

[匿名]

回覆: 2

2019-05-04 11:20 pm

If 25ml of 0.75 M NaOH is required to completely neutralize 150ml of HCl(aq), What is the molarity of the acidic solution?

[匿名]

回覆: 1

2019-05-01 8:31 am

A sample of a gas (1.50 mol) is contained in a 15.0 L cylinder.?

[匿名]

回覆: 1

2019-04-18 2:16 am

A sample of a gas (1.50 mol) is contained in a 15.0 L cylinder. The temperature is increased from 100 0C to 150 0C.?

[匿名]

回覆: 2

2019-03-20 12:03 am

The salt cesium perchlorate dissolves in water according to the reaction: CsClO4(s) Cs+(aq) + ClO4-(aq) (a) Calculate the standard enthalpy?

[匿名]

回覆: 2

2019-03-09 11:24 am

請問一下1000 ppm的HCl中 Cl離子有幾ppm?

[匿名]

回覆: 3

2019-03-08 11:54 am

A 100-g aluminum calorimeter contains 500 g of water at a temperature of 20ºC.?

[匿名]

回覆: 2

2019-03-08 5:56 am

what would be the word equation for " 2Na3PO4 + 3MgCl2 == 6NaCI + Mg3(PO4)2?

[匿名]

回覆: 2

2019-02-26 2:33 pm

How many mols are present in 1.405 Kg of C2H5OH ?

[匿名]

回覆: 1

2019-02-20 12:25 pm

What molality of a nonvolatile, nonelectrolyte solute is needed to raise the boiling point of water by 7.40°C (Kb = 0.520°C/m)?

[匿名]

回覆: 1

2019-02-20 12:25 pm

Determine the boiling point of an aqueous solution that is 2.30 m ethylene glycol (C2H6O2); Kb for water is 0.520°C/m.?

[匿名]

回覆: 1

2019-02-20 12:24 pm

The van't Hoff factor for a 0.0522 m aqueous solution of magnesium sulfate is 1.30.?

[匿名]

回覆: 2

2019-02-20 7:07 am

osmotic pressure?

[匿名]

回覆: 2

2019-02-20 1:30 am

A 12.5 L container of neon had a pressure change from 125 kPa to 35 kPa. What is the new volume? Show work what law?

[匿名]

回覆: 3

2019-02-13 12:28 pm

CHEM HELP!!!?

[匿名]

回覆: 1

2019-02-13 12:17 pm

A solution contains 3.65 mol of water and 1.50 mol of nonvolatile glucose (C6H12O6).?

[匿名]

回覆: 1

2019-02-13 12:16 pm

A solution contains 3.65 mol of water and 1.50 mol of nonvolatile glucose (C6H12O6).?

[匿名]

回覆: 1

2019-02-13 12:02 pm

A solution consists of 0.350 moles of glucose (C6H12O6) and 0.450 moles of sucrose (C12H22O11) dissolved in x moles of water (H2O).?

[匿名]

回覆: 2

2019-02-08 1:46 am

What is the density of N2O at 750 torr and 30•C?

[匿名]

回覆: 3

2019-02-05 10:32 am

How many total atoms of each indicated element are present in CH3(CH2)14CH3?

[匿名]

回覆: 4

2019-02-04 1:12 pm

What is the molarity of a solution that has a concentration of 10.0 g/L of NaCl?

[匿名]

回覆: 2

2019-01-24 3:05 pm

碳酸氫鈉加鹽酸是吸熱還是放熱?

[匿名]

回覆: 2

2019-01-22 2:37 pm

A gas mixture contains 0.850 mol of N2, 0.250 mol of H2, and 0.100 mol of CH4. What is the mole fraction of H2 in the mixture?

[匿名]

回覆: 2

2019-01-22 2:20 pm

Heliox is a mixture of helium and oxygen gas used to help patients with breathing difficulties.?

[匿名]

回覆: 1

2018-11-27 3:10 am

What mass of H2(g) is produced from the reaction of 1.5 g Al(s) with excess hydrochloric acid?

[匿名]

回覆: 2

2018-11-27 3:09 am

How to calculate maximum mass?

[匿名]

回覆: 1

2018-11-24 4:59 am

Find ΔE° (kJ) for the reaction below if the process is carried out at a constant pressure?

[匿名]

回覆: 2

2018-10-28 2:58 pm

please help me find out monomers in polymers?

[匿名]

回覆: 2

2018-10-05 10:50 am

What is the mass of the Ar (in g) within container "B"?

[匿名]

回覆: 2

2018-09-06 10:37 pm

Help with Year 12 thermo/chem?

[匿名]

回覆: 1

2018-08-21 6:10 am

I was wondering if anyone could translate this song name and band name so i can listen to it again. I believe its in chinese.?

[匿名]

回覆: 2

2018-07-15 6:50 am

Can pb2+ react with k2CrO4 and form precipitate ? Is it related to standard reduction potential ? thank you^^?