Chemistry

when 1 ml of 6 m hcl and 1 ml of bacl2 solution are added to the unknown, a solid white precipitate forms. the unknown could be what?
1 Answer
an ionic equation shows species _______ in solution. this equation is the ________ accurate representation of the chemical change occurring.
1 Answer
magnesium is a more reactive metal than copper. which is the strongest oxidizing agent? group of answer choices mg mg2 cu cu2
1 Answer
What mass of lithium chloride would contain 8.75g of chloride?
2 Answers
which of the following samples has the most moles of the compound? a) 163.0 g of fe2o3 b) 75.0 g of cas c) 150.0 g of bao d) all of the above have the same moles. e) impossible to determine unless the density of each compound is known.
1 Answer
Use the 5% rule to determine whether or not the equilibrium concentration of the acid can be approximated by its makeup concentration.(a) 0.45 M cyanic acid (HCNO, pKa = 3.46)%The approximation is valid.The approximation is not valid.(b) 0.0077 M hydrazoic acid (HN3, pKa = 4.6)%The approximation is valid.The approximation is not valid.(c) 1.5 M arsenic acid (H3AsO4, pKa = 2.26)%
1 Answer
What thermodynamic process occurs during the adhesive crosslink process? How do you know this process occurred?
1 Answer
because they deliver nicotine in the form of vapor rather than smoke, e-cigarettes do not produce toxic chemicals like formaldehyde. group of answer choices true false
1 Answer
the first ionization energy for gold is 890.1 kj/mole. is electromagnetic radiation with a wavelength of 600 nm capable of ionizing (removing an electron) a gold atom in the gas phase? explain your answer.
1 Answer
what is the percent by volume of 50.00ml of a 50% nacl solution added to more solvent to make 120.oo ml of solution
1 Answer
I NEED HELP ASAP! SHOW YOUR WORK! WILL MARK BRAINLIEST
2 Answers
oxalic acid, h2c2o4, occurs as the potassium or calcium salt in many plants, including rhubarb and spinach. an aqueous solution of oxalic acid is 0.580 m h2c2o4. the density of the solution is 1.022 g/ml. what is the molar concentration?
1 Answer
in a 55.0-g aqueous solution of methanol, ch4o, the mole fraction of methanol is 0.100. what is the mass of each component?
1 Answer
i need this quickly.
1 Answer
If 1 litre of 2.2m sulphuric acid is poured into a bucket containing 10 litres of water and the resulting solution is mixed thoroughly the resulting sulfuric acid concentration will be
1 Answer
calcium oxalate, cac2o4, is very insoluble in water. what mass of sodium oxalate, na2c2o4, is required to precipitate the calcium ion from 37.5 ml of 0.104 m cacl2 solution?
1 Answer
What makes up a community in an ecosystem?
2 Answers
in your procedure, you are directed to reheat your test tube if the ratio of k to o is close to 1:2. explain why you are directed to do this.
1 Answer
g which of the following has the highest boiling point? a. propanal b. ethanal c. butanal d. methanal
1 Answer
four samples of solution where analysed and the following were collected: anion added observation s2- nothing so42- precipitate oh- nothing co32- precipitate which one of the following group ii cations is found in the unknown solution?
1 Answer
Need help Ill give points
1 Answer
a piece of tin foil has a volume of 0.645 mm3. if the foil measures 10.0 mm by 12.5mm, what is the thickness of the foil? group of answer choices 0.000 516 mm 80.6 mm 0.005 16 mm 0.0516 mm 194 mm
1 Answer
the identity of an unknown monoprotic organic acid is determined by titration. a 0.173 g sample of the acid is titrated with 0.157 m naoh. what is the molar mass of the compound if 6.12 ml of the naoh solution is required to neutralize the sample?
1 Answer
what is the mass percent of carbon in decane c {10}h {22}? use two decimal places in atomic masses. only give the numeric value of your answer.
1 Answer