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Hiba
Questions and answers by visitors named
Hiba
Questions (28)
How many liters of water must be added to 4 liters of a 6 molar HNO3 solution to create a solution that is 2 molar?
6 answers
1,081 views
NaOH+HNO3---> NaNO3+H2O
calculate the number of moles of every ion present in solution after the reaction has occurred.
5 answers
778 views
In which reaction does the oxidation number of oxygen increase?
a. Ba(NO3)2+K2SO4--->BASO4+2KNO3 b. HCL+ NaOH---> NaCl+H20 c.
3 answers
1,923 views
what is the horizontal asymptote for y=(x-2)/(x^2-9)?
1 answer
252 views
Least to greatest
Plz help me ....o.o101-0.100-0.110-0.0011 Plz help me to find a least to greTesT.
7 answers
347 views
when designing a protocol to produce auxotrophs for biochemical pathways, how long should you irradiate yeast in this system to
1 answer
362 views
a steel cylinder of oxygen with a volume of 15 L was available for medical purposes. The cylinder pressure decrease from 40.6 to
1 answer
419 views
a steel cylinder of oxygen with a volume of 15 L was available for medical purposes. The cylinder pressure decrease from 40.6 to
1 answer
475 views
A pebble is dropped from rest from the top of a tall cliff and falls 4.9meters after 1 second has elapsed. How much further does
3 answers
2,097 views
The sum of two numbers is 80 and if subtracted the results is 5
What are thet two numbers
1 answer
347 views
A 40.0cm diameter loop is turned to the position where the largest flux is handled in a uniform electric field. In this
1 answer
335 views
1- A 40.0cm diameter loop is turned to the position where the largest flux is handled in a uniform electric field. In this
1 answer
424 views
1- Calculate the splitting energy of [Co (NO2) 6] -3 since 364 nm has a single band?
2- 420 micro Siemens value is read in the
3 answers
449 views
1_ Al in 1.200 g impure [NH4Al (SO4) 2] (237 g / mol) is precipitated with NH3 as Al2O3 × H2O. The precipitate is filtered
4 answers
464 views
3_ If the ammonia solution is added to the tin salt solution (2), what is the compound precipitated in white color?
4_ Which of
1 answer
255 views
1 Calcium solution
2 Barium solution 3 Strontium solution In which solution or solutions does not precipitate form when potassium
1 answer
345 views
I need help choosing the right answers, please🙏🏻
1_ Which of the following is a secondary amine? a) Dipropylamine b)
1 answer
354 views
1)_What is the pH of the medium when 10.00 mL of 0.1000M NaOH is added to 18.00 mL of a 0.1000M benzoic acid (C6H5COOH)
3 answers
243 views
Which of the following is equal to the solubility of Ba(IO3)2, a poorly soluble salt, in water? Ksp=1.57×10^-9
a) 1.98×10^-9M
1 answer
226 views
1)_ 500ml solution is prepared by dissolving 2560mg Ca3(PO4)2 in enough water. Calculate the value of pCa accordingly?
1 answer
181 views
2)_ To prepare a buffer solution with a pH of 3.45 What should be the mass of Sodium mandelate that should be added to 500ml of
1 answer
347 views
3)_ Calculate the pH's before and after adding 0.5mmol HCl to 100ml 0.02 Lactic acid + 0.08M Sodium Lactate mixture?
1 answer
208 views
1) A sample of 0.5843 g of vegetable food was analyzed using the Kjeldahl method to find the nitrogen content. The liberated
3 answers
317 views
Choose the correct one:
1) 25.00 mL is taken from a solution containing NaOH, NaHCO3 and Na2CO3 individually or as a mixture. up
1 answer
230 views
Choose the correct one:
1) 25.00 mL is taken from a solution containing NaOH, NaHCO3 and Na2CO3 individually or as a mixture. up
1 answer
303 views
1- Why is soap made from potassium salts of fatty acids soft?
2- Why does adding a salt solution lead to a precipitation of soap?
1 answer
186 views
What would be the pAg value if 30.00ml of 0.100M AgNO3 was added to a sample containing 30.00ml of 0.100M Br^-? (Ksp= 5.2
1 answer
244 views
A 0.4510 g metal sample is dissolved in nitric acid and all metals are masked except bismuth (Bi^3+ = 209 g/mol). The solution
1 answer
219 views
Answers (16)
thank you very much🙏🏻☺️
You wrote 3*159-2*51=159-102=57 So my question is that why are you putting 159 . This is even not in the question
Can u plz explain me in easy way.i don't understand the calculation
180 - 132 = 48 132 + 48 = 180 180 - 48 = 132 48 + 132 = 180
300
1.3
To maximize the number of auxotrophic mutant should not be more than 20 min, because if the cells exposed more than 20 min according to data I have, the number decrease start from 40 min and more.
85
I think the answer is 16 .....2(4+4) 16 . am I right .help ..
Thank you both of you.
These 2 answers are different which one is the right.
So the answer is 6 .please let me know if I m right or wrong.
Thank you.
Sorry i got confused so it is 4000 mL. So will the final volume be the L that is added?
YES 15g NaOH dissolves in 150 mL of 0.250 M nitric acid.
So will it be 0.004*6=2(mL) 0.024/2=mL 0.012mL ?
