11/19/17

What is the dose for a 70 lbs child if the average adult dose is 25mg?
Show working please
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11/19/17

How many liters of 5% sulphuric acid solution can be prepared from 1500 milliters of a 12 % solution?
Show working please
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11/19/17

What three regions is the Pharynx divded into?
question is above   
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11/17/17

calculate the value of pKa for the acid HA
[HA] = 0.120 M [H+] = 3.00 x 10^-4 M [A-] = 3.00 x 10^-4 M
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11/17/17

what are the concentrations go H3O+ and OH- in oranges that have a pH of 3.71?
H3O+ = ?M OH- = ?M
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11/17/17

calculate pH for each H3O+ concentration
a) [H3O+] = 1 x 10^-7 M pH= ? b) [H3O+] = 0.1 M pH= ? c) [H3O+] = 1 x 10^-13 pH= ?
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11/17/17

what is the formula for the salt that forms?
HNO3(aq) + Ba(OH)2(aq) -> 
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11/17/17

write the balanced molecular equation for the neutralization reaction between H2SO4 and KOH in aqueous solution
phases are optional
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11/17/17

How do I solve this Chemical Bonding Problem?
Predict the type of bond (ionic, covalent,or polar covalent) one would expect to form between the following pairs of elements.   A. Rb and Cl    B. S and S   C. C and F    D.  Ba and... more
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11/17/17

Calculate weight of air required for the combustion of 2kg of carbon tell me445578698709562350065.
Ggfhg
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11/17/17

What percent of 300 liters is 2.1 liters
percent of 300300 liters is 2.12.1 liters?
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11/16/17

how does membrane of the cell differ from the nuclear membrane
how does membrane of the cell differ from the nuclear membrane
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11/16/17

what is the list of organelles that take part in protein synthesis
 what is the list of organelles that take part in protein synthesis
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11/16/17

Find ΔS∘ for the reaction between nitrogen gas and fluorine gas that forms nitrogen trifluoride gas. 12N2(g)+32F2(g)→NF3(g)
Standard Entropies for Selected Substances at 25 ∘CSubstance S∘(J/mol⋅K)N(g) 153.3N2(g) 191.6F(g) 158.75F2(g) 202.79NF3(g) 260.8
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11/16/17

If 8 ml of 0.3 M HCL solution is mixed with 12 ml of distilled water calculate the pH of the diluted solution?
please show your working
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11/16/17

Carbohydrates Prelab
Why do some disaccharides give positive Benedict's tests while other disaccharides give negative tests ?  
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11/15/17

At costco,32 cans of coke cost a total of $8.96what is the cost per can?
At costco,32 cans of coke costs $8.96 whats is the cost per can?  
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11/15/17

Chemistry help
In the fermentation of glucose (wine making), 710 mL of CO2 gas was produced at 35 ∘C and 1.00 atm . What is the final volume, in liters, of the gas when measured at 20 ∘C and 675 mmHg , when n is... more
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11/15/17

Will llamas rule the world?
I want to know if someday llamas will rule the world.
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11/15/17

if meg walks 1/3 a mile in 1/9 of an hour, how many miles will she walk in one hour?
need help with this question!!! Its driving me crazy
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11/15/17

Elodea in saltwater?
Elodea normally lives in fresh water. What changes would you observe in the cells of anElodea plant that was suddenly moved from freshwater to saltwater? Why?
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11/15/17

Carbon dating
Half life radioactive decay dating.    Prehistoric cave paintings were discovered in France. The paint contained 7% of the original carbon-14. The half-life of carbon-14 is 5730 years. How old... more
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11/15/17

each DNA molecule has two new strands.
yukyukrryukryukryukyukyk yuk yuk yruk ryuk r
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11/15/17

what is the empirical formula?
the compound xylene consists of 90.49% C and the rest is hydrogen.What is the empirical formula?
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11/14/17

determine the mass of the sample
1.48 mol carbon tetrafluoride 
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