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Christopher

回覆: 3

2018-07-01 5:11 pm

I'm asking for chemistry?

[匿名]

回覆: 4

2018-06-28 5:00 pm

A 0.435 g sample of a gas occupies 55.0 ml at standard temperature and 45.6 mmhg. Determine the molar mass of the gas.?

[匿名]

回覆: 5

2018-06-28 12:32 am

Maths question HELP !!!?

[匿名]

回覆: 4

2018-06-27 1:04 pm

Urgent physics question answer ASAP!!!?

[匿名]

回覆: 2

2018-06-27 7:47 am

Chemistry homework?

[匿名]

回覆: 6

2018-06-26 11:08 pm

Help with pythagorean theorem world problem?

[匿名]

回覆: 3

2018-06-26 2:01 pm

what is the apparent mass of a 5.9x10^3 kg alien spacecraft traveling at 0.84c?

[匿名]

回覆: 2

2018-06-25 1:32 pm

What is the pH of a 0.210 M aqueous solution of potassium nitrite, KNO2? pH =?

[匿名]

回覆: 1

2018-06-25 10:27 am

Please help me this Chemistry question. Thanks!?

[匿名]

回覆: 5

2018-06-25 9:35 am

A sequence is defined recursively by the given formulas?

[匿名]

回覆: 2

2018-06-25 12:51 am

Please help?

[匿名]

回覆: 5

2018-06-24 9:53 pm

Calculate the number of mole of atom in 8g of oxygen gas (relative atomic mass for oxyegn: 16g/mol)?

[匿名]

回覆: 2

2018-06-15 12:27 am

help with chemistry questions!!?

[匿名]

回覆: 2

2018-06-13 3:56 pm

12.48 g of sample of MgO and MgCO3 on strong heating lost 4.4g weight. What is composition of original mixture?

GUY

回覆: 1

2018-06-13 1:51 pm

divide ax^2+bx+c=0 by x^2 on both sides. what is the new equation?

[匿名]

回覆: 2

2018-06-13 11:39 am

What is the velocity acquired by a freely falling object 5 seconds after being dropped?

[匿名]

回覆: 1

2018-06-13 8:49 am

Help with enthalpy problem?

[匿名]

回覆: 1

2018-06-12 11:42 pm

select the atoms that are likely to lose electrons to form cations bromine(br) iodine(i) potassium (k) lithium(li)?

[匿名]

回覆: 1

2018-06-09 12:11 pm

Examine the data. N2(g) + 3H2(g) ⇌ 2NH3(g) ΔH° = −92 kJ ΔS° = −0.20 kJ/K Which of the given is correct about the ΔG° at 35 °C?

[匿名]

回覆: 1

2018-06-08 1:49 pm

what is this?

[匿名]

回覆: 3

2018-06-08 6:33 am

Chemistry help, 10 points?

[匿名]

回覆: 4

2018-06-08 4:34 am

Hydrogen Peroxide solutions are typically stored in dark brown opaque containers. Why?

[匿名]

回覆: 1

2018-06-07 11:34 pm

What volume of 0.205 M K3PO4 solution is necessary to completely react with 130 mL of 0.0122 M NiCl2?

[匿名]

回覆: 2

2018-06-07 9:48 pm

The molarity of an aqueous solution of LiOH is 0.0025 M. - what is the concentration of H3O+ in this solution?

[匿名]

回覆: 3

2018-06-07 6:14 am

what is the net ionic equation for the neutralization of CH3COOH with NaOH?

[匿名]

回覆: 18

2018-06-07 10:23 am

three times some number equals seventy-eight more than the number itself?

[匿名]

回覆: 2

2018-06-07 12:32 am

what's this compound ch3(ch2)3ch(ch2ch2ch3)ch(ch3)2?

[匿名]

回覆: 3

2018-06-07 8:12 am

Need Help??

[匿名]

回覆: 17

2018-06-06 10:30 pm

How do you convert .003 percent to a fraction?

[匿名]

回覆: 1

2018-06-06 12:42 pm

What are the frequencies of these waves?

[匿名]

回覆: 1

2018-06-06 10:11 am

Chem help Henry's Law?

[匿名]

回覆: 3

2018-06-06 7:47 am

What is mass percent benzoic acid in powder?

[匿名]

回覆: 1

2018-06-05 5:19 pm

Chemistry: How does the volume change if you mix 3L of SO2 and 2L of O2 and they produce SO3?

[匿名]

回覆: 2

2018-06-05 10:45 am

Diethyl ether (CH3CH2OCH2CH3) was one of the first chemicals used as an anesthetic.?

[匿名]

回覆: 6

2018-06-04 11:14 pm

What is the fraction of 2.(9)?

[匿名]

回覆: 2

2018-06-04 6:03 pm

Without using a calculator, determine the exact surd value of sin 7π/6?

[匿名]

回覆: 6

2018-06-04 4:47 pm

6-2-(6-9)-3+(-3)?

[匿名]

回覆: 4

2018-06-04 4:54 pm

In the triangle ABC, the sides are c=9 b=12.The given angles are B=2x and C=x. Find all missing sides and angles.?

[匿名]

回覆: 3

2018-06-04 2:58 pm

the reaction of 5.0g of pentane (C5H12) with a 5.0 g of oxygen gas produces 20.4 g of CO2 what is the percent yield of this reaction?

[匿名]

回覆: 2

2018-06-03 5:21 pm

buffer question?

[匿名]

回覆: 2

2018-06-03 6:28 pm

CHEMISTRY (pls show ur steps in detail )?

[匿名]

回覆: 7

2018-05-31 4:21 pm

How do I solve solve this? find the gradient of y + 7x = 8?

[匿名]

回覆: 1

2018-05-31 3:35 pm

how many grams are there in 2.30x10^24 atoms of silver?

[匿名]

回覆: 1

2018-05-31 12:32 pm

Help chemistry?

[匿名]

回覆: 2

2018-05-30 11:09 am

Chemistry help?

[匿名]

回覆: 2

2018-05-30 4:05 pm

Calculate the Eo for the half-reaction?

[匿名]

回覆: 3

2018-05-30 7:34 am

PLEASE HELP!! Chemistry Question?

[匿名]

回覆: 1

2018-05-28 10:06 pm

10.5g of Cu(NO3)2 are dissolved in 500g of water. Determine the expected boiling point of the solution. (Please)?

[匿名]

回覆: 10

2018-05-28 8:58 am

How can I work out how many litres my suitcase is? It's measurements are 50 cm tall,37 cm wide and 20 cm depth.i can't rememeb math class?

[匿名]

回覆: 2

2018-05-27 10:04 pm

find the area of the polygon with vertices of A(2, 2), B(2, 7), C(8, 7), and D(4, 2)?