用戶26240

[匿名]

回覆: 5

2020-10-06 6:48 pm

solve 4loga(x)=loga(81)?

[匿名]

回覆: 12

2020-10-06 6:19 pm

What is the derivative of 152sin^2(x)?

[匿名]

回覆: 1

2020-10-06 4:57 pm

Logarithm questions?

[匿名]

回覆: 10

2020-09-27 11:30 pm

math answer; i got 10.8?

[匿名]

回覆: 2

2020-09-27 11:02 pm

Need some help with chem please.?

[匿名]

回覆: 1

2020-09-27 7:52 pm

市售37% HCl ,想稀釋配製成5M HCl 的 25.4 ml ,請問怎麼算,謝謝?

[匿名]

回覆: 1

2020-09-23 12:23 am

Describe the change in atomic radius as you read down each family. Explain why this happens.?

[匿名]

回覆: 1

2020-09-23 12:21 am

Describe how the atomic radius changes as you read from left to right across a row. Why does this happen?

[匿名]

回覆: 1

2020-09-22 4:40 pm

Calculate the percent composition of the elements in 3-chloro-2-methylbutanoic acid.?

[匿名]

回覆: 2

2020-09-22 2:37 pm

Complete the following equation showing the main organic products...?

[匿名]

回覆: 2

2020-09-16 12:23 am

Consider a function...?

[匿名]

回覆: 2

2020-09-16 12:06 am

An ammeter has a resistance of 1.0. The circuit consists of a 10. Resistor that is in series with a 6.0 V ideal battery...?

[匿名]

回覆: 1

2020-09-15 11:43 pm

Chemistry Acids and Bases?

Mcc

回覆: 2

2020-09-10 10:36 pm

Logs Question help?

[匿名]

回覆: 4

2020-09-10 11:14 pm

Solve this equation by factorisation?

[匿名]

回覆: 5

2020-09-10 10:49 pm

Empirical formula question?

[匿名]

回覆: 2

2020-09-07 11:20 pm

exponential question!!! important!!?

[匿名]

回覆: 2

2020-09-07 11:24 pm

exponential question?

[匿名]

回覆: 6

2020-09-02 11:01 am

1. If you travel 7000 m at a rate of 25 m/s and, how long does it take to complete the trip? 2. How long does it take to get back?

[匿名]

回覆: 1

2020-09-02 10:49 am

What is the edge length of a simple cubic unit cell made up of atoms having a radius of 158 pm?

[匿名]

回覆: 6

2020-09-02 2:16 am

what is the absolute value of the difference of 24?

[匿名]

回覆: 2

2020-08-27 7:33 pm

How many grams of boron oxide, B2O3, can be produced from 20.0 g diborane (B2H6)?   B2H6 (l) + 3O2 (g) → B2O3 (s) + 3H2O (l)?

[匿名]

回覆: 2

2020-08-27 6:39 pm

Is the lowest common denominator (LCD) the same as the least common multiple (LCM)?

[匿名]

回覆: 1

2020-06-07 12:54 pm

What are the oxidation states of the transition metals in the following compounds?

[匿名]

回覆: 1

2020-06-07 8:06 am

write the full balanced equation, the full ionic equation and the net ionic equation. (3 steps)?

[匿名]

回覆: 1

2020-06-07 8:56 am

Complete and balance the reaction of copper wire and nitric acid?

[匿名]

回覆: 2

2020-05-20 11:36 pm

Can you please help me I don't understand this.?

[匿名]

回覆: 1

2020-05-20 11:16 pm

Calculate the equilibrium concentration of each compound if 2.30 moles of CO and 3.40 moles of Br2 are placed in a 4.50 liter container?

[匿名]

回覆: 1

2020-05-20 10:40 pm

If 24.0 mL of 0.10 M Ba(NO3)2 are added to 64.0 mL of 0.17 M Na2CO3, will BaCO3 precipitate? Then Calculate Q. show all work please?

[匿名]

回覆: 1

2020-05-20 10:05 pm

Need help with this.. Calculate the acceleration and displacement when the velocity is 15ms−1, if x=t ^3 − 12t + 32.?

[匿名]

回覆: 1

2020-05-12 8:04 am

find all complex roots of w=16(cos(4π /3)+ i sin (4π /3)). write your answer in rectangular form.?

[匿名]

回覆: 2

2020-05-12 12:09 am

write out the summation?

[匿名]

回覆: 1

2020-05-11 3:22 pm

Maltose is formed according to the equation 2C6H12O6(s) → C12H22O11(s) + H2O(l) Calculate the enthalpy of reaction, given that:?

[匿名]

回覆: 2

2020-04-29 11:57 am

47)What pressure in atm) will 0.44 moles of Br 2 exert in a 10.2 L container at 25°C?

[匿名]

回覆: 3

2020-04-29 10:59 am

ArcSinx - ArcCosx =??? Option 1: pi/2 Option 2: -1 Option 3: pi/6?

[匿名]

回覆: 2

2020-04-29 11:24 am

What is the net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide?

[匿名]

回覆: 2

2020-04-16 12:25 am

Buffer Question?

[匿名]

回覆: 2

2020-04-15 11:55 pm

When the nuclide iodine-131 decays to xenon-131, what kind of decay does iodine-131 undergo?

[匿名]

回覆: 2

2020-04-15 11:29 pm

electrochem. Consider the following reaction at 298K. Co2+ (aq) + 2 Ag (s) Co (s) + 2 Ag+ (aq) ?

[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: 4

2020-04-12 8:25 pm

Plug x=(1/4)ln(k) into ...?

[匿名]

回覆: 1

2020-04-12 3:18 pm

We electroplate a piece of metal submerged in a solution of copper (II) chloride with a current of  ?

[匿名]

回覆: 1

2020-04-12 3:19 pm

The Ksp of Cobalt (II) hydroxide is 2.5E-18. By externally changing the pH, ?

[匿名]

回覆: 2

2020-04-07 8:32 pm

The sun shines at a 30° angle to the ground. To the nearest inch, how long is the shadow cast by a 72-inch tall fence post?

[匿名]

回覆: 2

2020-04-07 8:14 pm

theoretical yield?

[匿名]

回覆: 1

2020-04-07 5:37 pm

Find pH and concentration of HSO3- and SO3-2 in .05 M NaHSO3.?

[匿名]

回覆: 3

2020-04-07 1:48 pm

calculate standard enthalpy change for reaction?

[匿名]

回覆: 2

2020-04-03 12:24 pm

chem help pls ?

[匿名]

回覆: 2

2020-04-03 12:48 pm

Chemistry Help Needed!!?

[匿名]

回覆: 1

2020-04-03 12:24 pm

The Ksp of iron (II) carbonate is 3.5E-7. How many liters of a saturated solution of iron(II) carbonate will contain 0.088 grams of iron(II)?