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Chemistry
Chemistry
Explore the principles that govern the natural world, encompassing fields like physics, chemistry, earth sciences, and biology. This subject provides a holistic understanding of the universe.
205k
Questions
Q: List two observations from the vinegar lab that imdicates a chemical reaction took place
2 answers
Q: How is percent yield calculated
3 answers
Q: Fill in the blank. Elements of a compound _____ their properties
3 answers
Q: Is soil metal or Non-metal
2 answers
Q: can you use clorox or tide as slime actavator
4 answers
Q: - How many grams of water should be added to prepare a 2% solution by mass with 16.5g of MgCl….A) 402.5B) 808.5C) 155D) 400E) 82.5
2 answers
Q: - Which of the following particles differ in isotope atomsA) cationsB) neutronsC) ionsD) protonsE) electrons
1 answer
Q: - If the mass of 0.8 moles mixtures of NO and CH4 gases is 17 grams;I. The number of moles of NO is greater than the number of moles of CH4II. CH4 in the mix is 8 grams.III. NO in the mix is 0.3 mole
1 answer
Q: There are 2 grams of H2 gas in a fixed volume container at 273 C. 16 grams of He gas isadded to the container and the temperature is raised to 819 C. So what is the ratio of finalpressure to initial pressure
1 answer
Q: 30.4 grams of X2O3 gas makes 2 atm pressure at 273 C in a 8.96 liter container. So, howmany g.mol is the molar mass of the X atom of the X atom (O:16)
2 answers
Q: do you smell that
2 answers
Q: Can an Alloy 20 Pipes stad to an acid attack
1 answer
Q: what is the most reactive (non-metals) group in the periodic table
2 answers
Q: When lime stone CaCO3 is roasted, quick lime CaO and CO2 is produced. Actual yield of CaO is 2.5kg When 4.5kg of limestone is roastedWhat is %age yield of reaction
1 answer
Q: A cook fills a 50 mL container with 43.5 g of cooking oil. What is the density of the oil
3 answers
Q: What is the volume of 250 g of sea water The volume of asame mass of pure water will it be higher or lower than thatsea water
2 answers
Q: what is the volume occupied by 15 g of helium
3 answers
Q: the one- or two-letter code for an element is its
2 answers
Q: What is Bharat Gas Online Booking Process
2 answers
Q: What is the main characteristic of gymnospermSeeds
2 answers
Q: What is the chemical name for FeSO4.NO
2 answers
Q: what does the different levels of this app mean
2 answers
Q: You prepare a less concentrated H C l solution from a stock solution with 12m concentration. If you too 100g of the stock solution to prepare 4 MHCl solution how much water is needed to prepare o find solution 9density HCL(12) = 1,89/ml
2 answers
Q: how many grams iron will absorb 900 joules of heat and only change temperature by .2 degrees
2 answers
Q: The energy and particles given off during a nuclear reaction are called
6 answers
Q: What is the percentage composition of CH4
5 answers
Q: What are the types of titanium ball valves available in the market for commercial use
2 answers
Q: 576335 to 1s.f
2 answers
Q: Calculate the joules of heat needed to cool 159 g of water at 100oC to water at 65oC
2 answers
Q: milk tuning sour is an chemical change
2 answers
Q: What are the different types of titanium ball valves
2 answers
Q: what is the difference c3 and c4 hplc column
2 answers
Q: What are nutraceutical products
2 answers
Q: Brass vs stainless steel whichis suitable for plumbing
2 answers
Q: Which of the following is a characteristic of professional presence
3 answers
Q: Which potion is known as "liquid luck"
2 answers
Q: what can be different types of color in a doughnut base
2 answers
Q: how many blackhole mass is sol mass
2 answers
Q: What are the different materials used to manufacture fasteners
2 answers
Q: What is the name of the element of period 5 transition element 51 neutrons
2 answers
Q: Which one is more reliable for custom metal bracket
2 answers
Q: How to find a good custom metal bracket
2 answers
Q: Add one letter: a hard tablet used for writing on with chalk
2 answers
Q: which of the following reaction would have an increase in entropy
2 answers
Q: What is the effect of pressure on enzymes
2 answers
Q: physical property that is shared by gold and copper but not iron
2 answers
Q: If I lose a hydrogen from an acid what do I have now
2 answers
Q: what is the unit of purity of a chemical sustance
2 answers
Q: you have 500 ml of a 1.5 m hcl solution (acid). if there is 250 ml of koh solution present (base). what will be the molarity of the koh (base)
3 answers
Q: hio
2 answers
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