In a sample of MgSO4 • 2H2O(s), there are ___ times as many oxygen atoms as magnesium atoms.   Question 3 options:   2   6   4

Q: Answer the following questions about this nitrogen ion (N). 1. How many protons are present in this…

A: No of electrons, protons and neutrons =?

Q: How many electrons does the predictable (mostcommon) ion of fluorine contain? (a) 1 (b) 4 (c) 9 (d)…

A:

Q: What is the mass, in grams, of 8.55x1021 iron atoms? O 11.9g O 0.793 g O 1.26g 55.7g

A: Given: Number of iron atoms = 8.55 × 1021 atoms.

Q: (a) H2 _?_ x1025 H atoms  (b) Ca(NO3)2 _?_ x1023 Ca2+ ions  _?_ x1024 NO3- ions  (c) N2O2 _?_ x 1024…

A: The mole is actually contains Avogadro’s number of particles in elements or compounds. Avogadro’s…

Q: How many atoms of O there in 30.6 grams of cadmium (II) phosphate?

A: Ans : 2.79 × 1023 atoms of O

Q: When a certain main group element E is reacted with an excess of strontium at room temperature, this…

A: Given reaction is,Sr(s) + E2 (g) ----------> SrE2 (s)Strontium is excess reactant in given…

Q: The mass percent of CO3 in ca(CO3)2 ( atomic mass C= 12, O = 16, Ca = 40) is O 60% O 77.77%) O 50% O…

A: Mass percent can be calculated by the formula given below as; Mass percent=Mass of the…

Q: How many grams of Al3+ are present in 4.12 grams of aluminum iodide?

A:

Q: In the chemical equation 2 Co(NO3)3 + 3 (NH4)2S → Co₂S3 +6 NH4NO3, how many hydrogen atoms are on…

A: First, consider the subscript present in the symbol of the element. If there is no subscript, it is…

Q: Some brands of salami contain 0.090% sodium benzoate (NaC2H3O2) by mass as a preservative. If you…

A:

Q: (b) A certain element has two naturally occurring isotopes. The mass of one of the isotopes is…

A: The meaning of iso is the same and topes stands for the position. In the periodic table, if the…

Q: Chemistry

A:

Q: On another planet, the isotopes of titanium have the given natural abundances. What is the average…

A: Given,The isotopes of titanium on the planet:                Isotope          Abundance…

Q: Consider the following organic substances: ethanol, propane,hexane, and propanol. (a) Which of these…

A: The functional group is the groups that are the characteristic moieties of the chemical compound…

Q: 4. How many grams are there in 0.4 mole of So,? (a) 35. 6

A: 4. Given : number of moles of SO2 = 0.4 mol  To calculate : mass of SO2 (in grams)

Q: The active ingredient in baking soda is NaHCO3. How many grams of NaHCO3 are needed to provide 2.15…

A: The active ingredient in baking soda is NaHCO3.  One atom of NaHCO3. contains = 3 atoms of O. or, 1…

Q: How much would 2.4 x 1024 molecules of N2O5 weigh?

A: Moles=2.4*10^24/(6.022*10^23) = 4

Q: How do I calculate the theoretical mass percent of barium in a sample of BaCl2*2H2O?

A: Generally, the %mass is determined by dividing the species mass with total mass of sample which then…

Q: The molecule TFM is used as a lampricide to control the sea lamprey population in the Great Lakes.…

A:

Q: QUESTION 8 (a) In the certain hydrated salt MSO34H2O, the mass percentage of H2O is 44.71%.…

A: (a) Given the hydrated salt MSO3.4H2O, in which mass % of H2O is 44.71% here, 4 molecules of water…

Q: (c) 35 (d) 13 3. In the periodic table, if oxygen were assigned an atomic weight of one, what would…

A: given, atomic weight of O is assumed to be 1

Q: If you have 7.20*10^26 platinum atoms, how many moles do you have?

A: Answer: This question is based on the relation between number of moles and Avogadro number which…

Q: When iridium-192 is used to treat cancer, a small cylindrical piece of 192Ir, a 0.6 mm in diameter…

A: Given,

Q: Determine the mass (in grams) of xenon that contains: a) 6.96 moles of Xe b) 2.74 × 1024 Xe atoms

A: Since, Moles is the ratio of mass to the molar mass of the atom or molecule. Thus,

Q: What is the mass of 3.30 x 1023 atoms of silver, Ag? 25.8 g 59.1 g 85.7 g 197 g 0.549 g

A: We will use formula of mole and mass to get answer. Number of atom = 3.3×1023

Q: Select the correct molecular mass of carbon dioxide A B C D 28.01 g CO₂ 44.01 g CO₂ 55.85 g CO₂ 22.4…

A: To determine: The molecular mass of CO2

Q: 5.061 g of a hydrated metal sulfate is heated only 2.472 g of anhydrous metal sulfate remains. What…

A: By heating the water is removed from the molecule . From the weight loss we can calculate the…

Q: ntify composition of the substance with each formula as one of the four: molecular (M), ionic (I),…

A:

Q: QUESTION 8 (a) In the certain hydrated salt MSO3-4H20, the mass percentage of H2O is 44.71%.…

A: The question is based on the concept of moles . we have been provided with a hydrate. we have to…

Q: Determine the Average Atomic Mass of the mixtures of Hydrogen isotopes. 99% 'H, 0.8% ²H, and 0.2% 'H

A: Answer is explained below.

Q: 5. In 43 grams of acetate, how many atoms of oxygen are present?

A: Mass of Acetate = 43 gram

Q: QUESTION 8 (a) In the certain hydrated salt MSO3-4H2O, the mass percentage of H2O is 44.71%.…

A:

Q: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of…

A: According to given data%mass of Tellurium in compound=28.53 %and% mass of Bromine in compound=71.47…

Q: Q4- Calculate the radius and volume also the density of Gold Nuclei (Au).

A: The relation between the mass number of a nucleus and the radius of the nucleus is given as follows;…

Q: 4. Citric acid was found to contain 37.51% C, 4.20 % H. and 58.29% O by mass. What is the simplest…

A:

Q: Determine the mass (in grams) of aluminum present in 1.08 grams of Al2S3?

A: Molar mass of the elements is equal to the sum of the atomic masses of all the elements. Molar mass…

Q: 2. A compound has the following chemical formula; CuAl6(PO4)4(OH); 4 H₂O. Calculate the mass…

A:

Q: QUESTION 1 If the atomic number of an element is 12 and its atomic mass is 25; you could conclude…

A: Given values are., Atomic number = 12 Atomic mass=25

Q: How many grams of chromium(II) fluoride contain 3.80 grams of Cr2+?

A: We have to calculate number of  grams of chromium(II) fluoride contain 3.80 grams of Cr2+

Q: If you have 6.03*10^26 platinum atoms, how many moles do you have?

A:

Q: 29. The mass spectrum shown is that of which element? (A) Y (B) Mo (C) Os (D) Zr O m/z Relative…

A: Every element exists as a different isotope and each isotope has a different relative abundanceThe…

Q: E) 1.618 (Q8) In the empirical formula of an oxide experiment, the value of x in MgxO was found to…

A: It if given the value of X=0.9 MgXO→Mg0.9Oso 1mole Mg0.9O contains-0.9mole Magnesium1mole Oxygen…

Q: How many atoms of O there in 24.7 grams of Al(C2H3O2)3?

A: Here structure of the compound is AlC2H3O23 Molar mass of the compound = 27+32×12+1×3+2×16gmol =…