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gabriella

Questions (40)

What conclusion could be drawn about the relationship between the two reactions? i know its a weird question but its on my
1. 0 answers
2. 421 views
a stone is thrown vertically upwards with an initial velocity of 14m/s .neglecting air resistence , find time taken before it
1. 2 answers
2. 1,184 views
>Find m∠BAC and m∠DAB in the figure shown below.Line upper D upper C is shown intersecting with line upper E upper B at
1. 1 answer
2. 895 views
What are the major differences between the circulatory system and the respiratory system?
1. 0 answers
2. 14,371 views
What is the ratio of the molarities of PO3^4- and HPO4^2− ions in a buffer solution having a pH of 13.16?What mass of K3PO4
1. 1 answer
2. 1,409 views
What is the pH at the equivalence point in the titration of 10.0 mL of 0.56 M HZ with 0.200 M NaOH? Ka = 6.6 × 10−5 for HZ.
1. 1 answer
2. 706 views
What is the pH at the point during a titration when 34 mL of 0.200 M HCl has been added to 29 mL of 0.0500 M NH3 solution? HCl
1. 1 answer
2. 807 views
Calculate the pH at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (C2H5NH2) with
1. 2 answers
2. 1,223 views
Calculate the ratio of [NH3]/[NH4+] that gives a solution of pH = 10.60.
1. 1 answer
2. 1,607 views
How many moles of sodium acetate(NaCH3COO) must be added to 1.000 liter of a 0.500M solution of acetic acid (CH3COOH) to produce
1. 1 answer
2. 1,365 views
The ionization constant of HF is 7.2 × 10−4. What is the molar concentration of H+ in a solution which is 0.353 molar in HF
1. 1 answer
2. 1,227 views
What mass of solid sodium formate (of MW68.01)must be added to 125 mL of 0.48 mol/L formic acid (HCOOH) to make a buffer
1. 1 answer
2. 998 views
What is the concentration of hydrogen ions in a solution containing 0.785 M HOCN (cyanic acid) and 0.659 M (NaOCN) (sodium
1. 1 answer
2. 1,005 views
What is the concentration of H+ ions in a buffer solution containing 0.305 M benzoic acid (with ionization constant 6.5 ×
1. 2 answers
2. 1,169 views
The ionization constant of HA is 1×10−6. What must be the ratio of [A−] to [HA] for the preparation of a buffer solution
1. 1 answer
2. 739 views
A buffer solution is made by dissolving 0.45 moles of a weak acid (HA) and 0.23 moles of KOH into 680 mL of solution. What is
1. 2 answers
2. 964 views
Under certain conditions, the reaction3A + 2B -> 4C was observed to proceed at a rate of 0.00348 M· s−1. What was the
1. 1 answer
2. 3,755 views
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first
1. 3 answers
2. 3,213 views
How much heat is required to heat 19 g of solid silver from 100 ◦C to liquid silver at 961◦C? The specific heat of solid
1. 1 answer
2. 1,438 views
Consider the specific heatsCH2O(s) = 2.09 J/g ¡¤◦ C. CH2O(§¤) =4.18 J/g ¡¤◦ C. CH2O(g) = 2.03 J/g ¡¤◦ C. The heat
1. 1 answer
2. 1,143 views
Consider the specific heats H2O(s) =2.09 J/g ¡¤◦C,H2O (§¤) = 4.18 J/g ¡¤◦C, and H2O(g) = 2.03 J/g ¡¤◦C. The heat
1. 1 answer
2. 1,049 views
When 0.515 g of compound X is burned completely in a bomb calorimeter containing 3000 g of water, a temperature rise of
1. 1 answer
2. 743 views
A sample of 1.67 grams of Z is dissolved into 500 grams of water which is in a Styrofoam coffee cup. The temperature is
1. 1 answer
2. 697 views
Calculate the energy required to heat 827 g of mercury from 37 ◦C to 42 ◦C. The specific heat capacity of Hg(§¤) is 0.138
1. 1 answer
2. 642 views
define constitution and explain federal constitution,unitary constitution,confederal constitution
1. 1 answer
2. 1,152 views
what does national unity preach.mention 5 institutions that promote national unity.
1. 2 answers
2. 1,396 views
STATE 4 facts and fallacies abt the effect of sports participation on women reproduction
1. 3 answers
2. 1,086 views
quelle heure est il?what is the time?6:35,12:15,22:50,16:30,23:55 PLS HEEEEEEEEEEEEEEEEEELP
1. 1 answer
2. 407 views
what are technical names
1. 1 answer
2. 373 views
define foreign trade
1. 2 answers
2. 1,091 views
a banquet hall area is in d shape of a rectangle 30m by 20m.part of d area is a concrete square 15m by 15m,the rest is covered
1. 2 answers
2. 845 views
If the temperature of a 500.0-g sample of liquid water is raised 2.00c how much heat is absorbed by the water?The specific heat
1. 4 answers
2. 5,967 views
Mrs. Rossi wrote the following clus for a mystery 4-digit number..The tens digit is twice the one digit .The hundreds digit is
1. 1 answer
2. 1,168 views
the place of vienna, austria is characterized by what physical and cultural features?
1. 2 answers
2. 427 views
What is the volume of ammonia needed when reacting 5.0 moles of oxygen with excess nitrogen?
1. 0 answers
2. 1,406 views
how wood i balance itt??NH3 + O2 -> H2O + NO
1. 2 answers
2. 469 views
hi im doing a debate tomorrow on global warming, i am arguing that it DOES exsit. the opposing side who don't believe in global
1. 2 answers
2. 1,011 views
if price index in 2002is 120 and price index in 2003 is 110, then the rate of inflation is what?if GDP goes up what will happen?
1. 1 answer
2. 502 views
hey i have a few questions i have no idea how to do them and the test is tuesdayif price index in 2002is 120 and price index in
1. 0 answers
2. 450 views
what the characteristics of all living things but explaining?GBRHT UKE5SHYKU3I7LNXKUGH Your question is unclear. However, I
1. 0 answers
2. 596 views

Answers (9)

merci bocku I I U
what the answer 😥😥😥😥
Me too!!!!
these questions are followups of the original questin posted. How much base much be added to make the solution equalized? Answer in units of mL What is the pKa for this acid?
95/100
lung infection headache waterborne diseases
shape and form also color
what is the question? ....
what does ^ mean

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