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Chemistry
Chemistry
Delve into the study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. Chemistry is the central science connecting other scientific disciplines.
221k
Questions
Q: write a simple word equation that shows you can figure out the charge of an ion given its numbers of electrons and protons
2 answers
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Q: Characteristics of Kaija
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Q: why are solids denser than water
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Q: What arr some of the physical properties of a pure substance
1 answer
Q: When the alcohol of molecular formula C4H10O is oxidised, what is the molecular formula of the acidformedA C4H12O2 B C4H10O2 C C4H8O2 D C4H6O2
2 answers
Q: what is the chemical change when a substance loses its luster
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Q: ___ do not have definite size of their container (APEX)
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Q: What is the approxinmated tempreture for a hot bath
1 answer
Q: Is stability a strategy
2 answers
Q: THE PEOPLE WHO STUDY CHEMISTRY IN ANCIENT TIMEIS CALLED
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Q: how can a flashlight be both luminous and non-luminous at the some time
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Q: What is the particle that an antom can loose or gain in order to form into a charged iron
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Q: coffee is a solid or liquid
4 answers
Q: What dissolves dental amalgam
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Q: CONSIDERING ONLY THE PROTONES BONDED TO CARBON, put in order of acidity descending the following compoundsCH3CH2OH, CH3COCH3, CH3COH, CH3COOCH3
2 answers
Q: What's the effect of moist heat on sugar
3 answers
Q: what do you know about prime aluminum
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Q: How is emu and pegion different from each other
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Q: What are the uses and applications of stainless steel 310 seamless pipes
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Q: Where are metal fasteners available at the lowest price
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Q: It is not ideal to put boiling water on a drinking glass since it may break. Is it true Why or why not
3 answers
Q: Two characteristic of an informal group
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Q: Acetates
2 answers
Q: Which reactant was the limiting reactant in the vinegar lab
3 answers
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: 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
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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: 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
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