A piece of weighing paper recorded a mass of 0.200 g. An object was placed on the weighing paper to give a combined mass of 10.900 g. What is the mass of the object? Group of answer choices A. 11.100 g

Q: What is the difference between a law and a theory?

A: The difference between a law and a theory has to be given.

Q: nd contains 12.4g of hydrogen. What is the percent by mass of hydrogen in the compound?

A: Given A 37.1 g sample of an unknown compound contains 12.4g of hydrogen. What is the percent by mass…

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Q: 4. Exactly 2 g of steel wool was placed in a 100 g glass jar. After 50 g of water was added to the…

A: Dear student, we are authorised to solve only one question at a time. Please post rest of the…

Q: A 75.0 g sample of a pure liquid, liquid A, with a density of 3.00 g/mL is mixed with a 75.0 mL…

A: To solve this problem we have to calculate the volume of pure solution A from its density.

Q: A sample of sodium reacts completely with 0.142 kgkg of chlorine, forming 234 gg of sodium chloride.…

A: A)  Given :- mass of Cl2 = 0.142 kg or 142 g  Mass of NaCl formed = 234 g  To be calculated :-  Mass…

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Q: Imagine that you took a road trip. Based on the information in the table, what was the average speed…

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Q: A student working on this lab found the mass of their sample after the first heating to be 30.6057…

A: Given information: Mass of sample at first heating = 30.6057 g Mass of sample after 5 minutes =…

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Q: Use the sample experimental data to calculate the mass of sample (BaCl2•xH2O) Mass of pan 15.110 g…

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Q: Given the data below, calculate the mass of copper in the original sample. Mass of original sample…

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Q: Obtain values from the pictures found in the procedure to complete the data table below. Remember to…

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Q: Mass of empty beaker: 30.453 g 31.909 g Mass of beaker plus sample, before heating: 31.176 g Mass of…

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Q: a. Ca(s) + Cd²"(aq) → Ca²*(aq) + Cd(s) b. Cu*(aq) + Fe3*(aq) → Cu?+(aq) + Fe2*(aq)

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Q: (a) 2C(s) + O2(s) → 2C0(g) (b) 2NAHSO3(s) Naz503(s) + 502(s) + H2O(g) (c) 2C(s) + 2H20g) CO23) +…

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Q: 1. A student measured a 6.790 g sample of a hydrated salt. After heating, the mass of anhydrous salt…

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Q: A 75.0 g sample of a pure liquid, liquid A, with a density of 3.00 g/mL is mixed with a 100.0 mL…

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Q: Explain the difference between a law and a theory?

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Q: A. O 2C2H6(g) + 702(g) 4CO2(g) + 6H2O(g) B. O C2H6(g) + 3.5014) → 2CO2(g) + 3H2O(g) C. O 2C2H6(g) +…

A: Ethane having formula C2H6

Q: Suppose you are measuring the mass of a solid sample on a balance using a weigh boat. You record the…

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Q: Obtain and record the length and width of a rectangular piece of aluminum foil. length 17 cm…

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Q: 1. Ms. Smith left the ice cream out long enough that it melted. She wasn't concerned though as she…

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Q: Give the maximum number of electrons in an atom that can have these quantum numbers:

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Q: Classify each statement as an observation, a law, or a theory. a. Chlorine is a highly reactive gas.…

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Q: A 75.0 g sample of a pure liquid, liquid A, with a density of 3.00 g/mL is mixed with a 50.0 mL…

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Q: 2. A temperature of 310'k is the same as: b) 94'F., a) 67'F c) 98.6'F. d) -97 F. e) 95'F.

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Q: A student observed the following data: Water temperature change Weight of water 8° C Metal…

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Q: ओोण्ना व छैकामकोe oनहवड (०. 655 Mmol) वर ०.6३० वरनल डि एतविल्वरव कीलता एतविकवहवd 2.5५ । t० s.32 L.…

A: Pressure=0.630 atm  V1=2.54L  V2=9.32L  R=0.08206 atm-L/mole. K

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.