NUMBER OF NUMBER OF NUMBER ELEMENT ELEMENT ATOMIC АТОМIC OF NAME SYMBOL NUMBER MASS PROTONS ELECTRONS NEUTRONS Carbon 12 6 TI 81 204 Cu 29 35 Technetium 98 43 Si 14 14

Q: Acetylene C2H2 gas is often used in welding torches because of the very high heat produced when it…

A: Concept:  While predicting the amount of any species in the reaction we should have balance chemical…

Q: Acetylene (C₂H₂) gas is often used in welding torches because of the very high heat produced when it…

A: Answer: This question is based on the stoichiometry of combustion reaction of acetylene where it is…

Q: Determine the mass of magnesium in a crucible if the mass of the crucible is 1.94 g and the mass of…

A: Determine the mass of Mg in a crucible ?

Q: Thank you, but why was 0.0135 multiplied by 2?

A: Answer: For most of the reaction on increasing the temperature rate of reaction increases because…

Q: 19 0

A:

Q: Aluminum metal reacts with iron (II) sulfate to produce aluminum sulfate and iron metal. How many…

A:

Q: A student determined that the mass of four pennies was 18.5grams. Use this information to calculate…

A:

Q: Acetylene (C,H, gas is often used in welding torches because of the very high heat produced when it…

A: The balanced equation for the reaction of Acetylene and Oxygen is given below  2C2H2 + 5O2 -->…

Q: How many atoms of oxygen (O) are there in a sample of (6.30x10^2) grams of NaNO3? Enter your…

A: Number of moles of substance=Amount of substanceMolar mass of substance 1 mole of a molecule…

Q: ubtract 3.58 x 10^-2 from 1.41 x 10^11 and report answer in g.

A: so the answer will be 140.99*109 g which can be considered as 1.41*1011 g

Q: e moles of a

A:

Q: When answering this problem, report the answer with the appropriate number of significant figures.…

A: Given, in an experiment, amout of copper sample used =0.496 gramsand in the end of the…

Q: 14K yellow gold is an alloy that contains gold, copper and silver. A 14K gold ring contains 6.90g of…

A:

Q: 5 Isopropylbenzene (C9H12) is commercially produced by Friedel–Crafts alkylation of compound H with…

A:

Q: A compound contains iron and bromine. A sample of the compound contains 6.371 g of iron and 10.991 g…

A:

Q: In which state of matter are the particles least tightly arranged?

A: Given, which state particles are least tight arranged-  Basically, three states of matter- Solid,…

Q: Calculate the mass of 0.11 moles of Cu(NO3)2. grams Give your answer to 2 decimal spaces.

A: Given that , No. Of moles of Cu(NO3)2 = 0.11 moles

Q: express each of the following values in the given base unit. .......... s = 316 Ms

A: Use the conversion unit,1 sec = 1000 millisecondsAfter conversion, make sure to round it off to 4…

Q: Acetylene (CH.) gas is often used in welding torches because of the very high heat produced when it…

A:

Q: A coffee cup is found to have a volume of 234m2. Using unit analysis, show what the volume of this…

A: Dimensional analysis is used to convert a physical quantity given in one type of unit to some other…

Q: How can I calculate this following this formula?  Ecell = E°cell - RT/nF lnQ

A: Answer: This quetsions demands the explanation of the values used in the original solution.

Q: Evaluate the following expression: 1.723 × 10² + 7.38 × 10³

A: Rule of significant figures (SF) in mathematical operations:(i) Addition and Substraction round by…

Q: What mass of Cl2 is represented by 17.1L at 4.16atm 78.0°C

A:

Q: If the mass sample of water was 5.39g and the molar mass of water is 18.02 g/mol, what is the amount…

A:

Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE):…

A: Formula of methyl tert-butyl ether (MTBE) is :-  CH3OC(CH3)3

Q: Acetylene (C2H2) gas is often used in welding torches because of the very high heat produced when it…

A: The objective of the question is to calculate the moles of acetylene (C2H2) needed to produce a…

Q: Sulfuric acid reacts with ammonium hydroxide.  What is the sum of the coefficients for the reactants…

A: Sulfuric acid (H2SO4) on reaction with ammonium hydroxide (NH4OH) gives ammonium sulfate ((NH4)2SO4)…

Q: 0.01061:0.00944 Find the ratio

A: We have given that                            0.01061 : 0.00944

Q: How many moles of water were lost if the amount of water lost was 0.378 grams?  Do not include units…

A: The moles of water that were lost if the amount of water lost was 0.378 grams are to be calculated.

Q: Calculate the volume in milliliters of a 1.9M silver perchlorate solution that contains 50.0 g of…

A: First find out the number of moles for the given compound. Using the calculated moles and molarity,…

Q: What is the number of known elements?

A: The table in which the elements are arranged in an increasing order of atomic number is termed as…

Q: reen plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in…

A:

Q: Acetylene C2H2 gas is often used in welding torches because of the very high heat produced when it…

A:

Q: Sl unit for the amount of substance is

A: The SI base units are the standard units. The standard units of measurement defined by the…

Q: Acetylene (C2H2) gas is often used in welding torches because of the very high heat produced when it…

A: The reaction of acetylene with oxygen gas that produces carbon dioxide gas and water vapour can be…

Q: Hydrobromic acid reacts with sodium hydroxide.  What is the sum of the coefficients for the…

A:

Q: The mole is a unit for counting. O False O True

A: One mole of a substance is equal to 6.022×10^23 of that substance present in  ( atoms, molecules, or…

Q: How many joules of energy are produced when 2184 kilograms of hydrogen are converted into helium in…

A: In the sun when hydrogens are fused to helium, there is a deficient of mass in the product helium.…

Q: During the experiment, the mass of original sample was 2.226 g, and the mass of copper obtained was…

A: In the question, only two elements Copper (Cu) and Chlorine(Cl) are mentioned.So, we can conclude…

Q: Question is in the image.

A: Step 1:Standard Molar Entropy, S0At a temperature of  0K, a substance's entropy has an absolute…

Q: The directions say: Do the following calculations and use the correct number of significant figures…

A: Counting of significant figures is important while doing the calculations.

Q: Calculate .076 X 41 , answer with the correct number of significant figures

A:

Q: Chlorine gas reacts with sodium iodide. What is the sum of the coefficients for the reactants and…

A: Balancing of chemical reaction- It consists of reactant (starting material) and products (substances…