hcbiochem

[匿名]

回覆: 1

2021-04-20 9:45 am

What is the daughter nuclide when Bi-214 experiences beta decay? Please explain ?

[匿名]

回覆: 1

2021-04-20 10:06 am

How would I Find the energy in joules that would that would be required to raise the temperature of 20 g of ice at -20°C to steam at 120°C? ?

[匿名]

回覆: 1

2021-04-18 4:16 am

Answer chemistry homework ?

[匿名]

回覆: 1

2021-04-18 4:15 am

Answer chemistry homework ?

[匿名]

回覆: 1

2021-04-18 3:01 am

Determine whether each molecule given below is polar or nonpolar.?

[匿名]

回覆: 1

2021-04-18 2:47 am

Predict whether or not each of the following molecules or ions should exist in a relatively stable form.?

[匿名]

回覆: 7

2021-04-10 10:20 pm

How do you make fuel out of water?  ?

[匿名]

回覆: 3

2021-03-24 12:17 pm

A 47.70 g sample of a substance is initially at 20.7 °C. After absorbing 1271 J of heat, the temperature of the substance is 119.1 °C?

[匿名]

回覆: 3

2021-03-22 11:23 pm

A sample of gas in a balloon has an initial temperature of 30. ∘C and a volume of 1.62×103 L If the temperature changes to 65 ∘C ?

[匿名]

回覆: 2

2021-03-22 11:19 pm

If you combine 410.0 mL of water at 25.00 ∘C and 120.0 mL of water at 95.00 ∘C, what is the final temperature of the mixture? ?

[匿名]

回覆: 2

2021-03-01 11:22 pm

Does anyone know the answer to this chemistry problem?

[匿名]

回覆: 1

2020-10-26 1:52 am

A slightly soluble salt has the formula A3B5 and a Ksp of 3.3E-26. What is pB in a solution of this salt?

[匿名]

回覆: 2

2020-10-25 1:15 am

How would I go about solving for POH with the given information?

[匿名]

回覆: 1

2020-10-08 2:51 am

Chem help?!?

Light

回覆: 2

2020-09-30 6:25 pm

What is molarity and molality?

[匿名]

回覆: 3

2020-09-30 11:39 am

When a group 1 element reacts it?

Jenny Thy

回覆: 5

2020-09-24 6:25 am

A chemical reaction that is first order in X is observed to have a rate constant of 2.1 × 10 –2s –1. ?

[匿名]

回覆: 1

2020-09-23 11:12 pm

If 36.9 mg of lidocaine HCl contains equivalent of 30 mg lidocaine base (MW = 234 g/mol). What is the molecular weight of the lidocaine HCl?

[匿名]

回覆: 1

2020-09-23 11:11 pm

How many grams of hydrocortisone acetate (MW = 405 g/mol) should be used to prepare a 65 g tube of ointment containing......?

[匿名]

回覆: 1

2020-09-21 8:02 am

Biochem/ free energy question?

[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: 3

2020-09-11 12:11 am

determine how many grams of CO2 are produced by burning 2.43g of C4H10?

[匿名]

回覆: 2

2020-09-10 12:57 am

Help with chemistry questions ?

[匿名]

回覆: 5

2020-08-31 11:55 am

What is the pH of acid rain?

[匿名]

回覆: 3

2020-08-31 10:52 am

Can someone please draw the grave ?

[匿名]

回覆: 2

2020-08-31 7:32 am

Biology problem help?

[匿名]

回覆: 1

2020-08-31 8:03 am

chem help?

[匿名]

回覆: 2

2020-08-26 10:51 pm

Calculating pH of buffers?

[匿名]

回覆: 2

2020-08-26 6:07 am

The standard-state reduction potential?

[匿名]

回覆: 2

2020-08-20 10:08 pm

How may pi-bonds are there in Ammonium molecule?

[匿名]

回覆: 2

2020-08-19 10:25 pm

g12 chem HBr and NH3 pH at equivalence?

[匿名]

回覆: 2

2020-08-19 10:17 am

Hydrogen gas (H2) reacts with nitrogen gas (N2) to produce ammonia (NH3)...?

[匿名]

回覆: 2

2020-08-19 12:57 am

At the equivalence point of a titration of acid-base reactions, the pH?

[匿名]

回覆: 3

2020-08-14 12:00 pm

How do you find the simplest ratio between the numbers of moles of NaHCO3 and CO2?

[匿名]

回覆: 2

2020-08-12 2:12 pm

Electrochemistry Question?

[匿名]

回覆: 3

2020-08-12 12:58 pm

Chemistry Help - Kinetics (Half-life)?

[匿名]

回覆: 1

2020-08-12 1:03 am

Biochem/ pKa/ buffer question?

[匿名]

回覆: 2

2020-08-09 12:12 am

Calculate the PH ?

[匿名]

回覆: 2

2020-08-06 12:32 pm

Which substance in each of the following pairs would you expect to have larger dispersion forces?

[匿名]

回覆: 2

2020-08-02 10:47 am

reaction quotient and equilibrium?

[匿名]

回覆: 2

2020-07-31 11:13 pm

Using specific heat capacity to find temperature change?

[匿名]

回覆: 2

2020-07-31 11:06 pm

Counting sigma and pi bonds in a small molecule?

[匿名]

回覆: 2

2020-07-30 10:59 pm

oxidizing agent and the reducing agent on the reactant side?

[匿名]

回覆: 2

2020-07-28 10:44 pm

When a solid dissolves in water, heat may be evolved or absorbed. ?

[匿名]

回覆: 2

2020-07-28 10:23 pm

Neohetramine, C16H21ON4 (285.37 g/mol) is a common antihistamine. A 0.1247 g sample containing this compound was analyzed by Kjeldahl method?

[匿名]

回覆: 2

2020-07-27 9:39 am

Chemistry ?

[匿名]

回覆: 2

2020-07-20 10:52 pm

Chemistry Help?

[匿名]

回覆: 2

2020-06-26 11:39 am

what is the full electron configuration of lead?

[匿名]

回覆: 3

2020-06-22 8:27 pm

which equation does not represent a neutralisation reaction?

[匿名]

回覆: 2

2020-06-20 10:26 pm

Oxidation questions?