What is the molecular mass of Sodium hydroxide given by the chemical formula “NaOH”. Atomic masses of sodium (Na), oxygen (O) and hydrogen (H) are 23, 16, and 1, respectively. a) 43 b) 40 c) 36 d) 32 e) none of these

Q: Counting Atoms Fill in the table Pb C CI Mass (g) 0.543 1.834 Molar Mass g/mol) 0.685 Moles Total…

A: We can solve these questions by knowing some of the basic mole concepts, like conversion of number…

Q: Calculate the mass in grams of each elemental sample.(a) 1.32 * 1020 uranium atoms(b) 2.55 * 1022…

A: Mole is defined as the ratio of given mass and molar mass. The unit of mole is mol. It is utilized…

Q: An unknown compound has the following chemical formula: NO where stands for a whole number.…

A: Moles of nitrogen = 8.4 mole Moles of oxygen = 8.43 mole Chemical formula = NxO To find :-  Value of…

Q: 17) If 4.61 x 1021 atoms of element X have a mass of 0.815 g what is the identity of X? The…

A:

Q: An unknown element X has the following isotopes: ¹⁰X (20.00% abundant) and ¹¹X (80.00% abundant).…

A: The term isotopes can be defined as the variants of a given chemical element that differ in neutron…

Q: Reference section 3.2 to find the atomic masses of 12C and 13C, the relative abundance of 12C and…

A:

Q: A 1 Amount of substance 1.1 Which mass corresponds to 6 × 1023 u (without calculation)? 1.2 What is…

A: The mass that corresponds to 6 × 10^23 atomic units is 1 gram. This is because 6 × 10^23 atomic…

Q: An unknown element X has the following isotopes: 140X (89.00% abundant) and 142X(11.00% abundant).…

A: Since,         Average Atomic mass=Σass of Isotope×% of Isotope100

Q: How many total atoms are there in 43.7 g of water (H,O)? total atoms: atoms

A:

Q: Please answer 6 Part A and B

A: Following are the appropriate answers of the given questions.

Q: A student synthesizes tin oxide to create a compound with generic formula SnxOy. She does this by…

A: Given : mass of product= 39.10 g        Mass of tin = 30.80 g

Q: An unknown element X has the following isotopes: ¹⁴⁰X (89.00% abundant) and ¹⁴²X(11.00% abundant).…

A:

Q: Write the chemical formula for each compound, and then calculate the number of atoms of oxygen in…

A: a) Given, 84.15g of boron oxide Chemical formula of boron oxide is = B2O3 Therefore, the number of…

Q: 2. How many grams are found in a sample of ammonia, NH3 that has 4.59 x 10²5 molecules? A) 4.71 x…

A: The question is based on mole concept. we need to calculate mass of given quantity of ammonia.

Q: Enter your answer in the provided box. Assume the atomic mass of element X is 22.99 amu. A 13.75-g…

A:

Q: Calculate the mass of CBr4 a) 320 g b) 332 g c) 92 g d) none of these

A: Mass of C = 12g/mol  Mass of Br = 80g/mol

Q: An unknown element X has the following isotopes: ²⁵X (80.5% abundant) and ²⁷X (19.5% abundant). What…

A: Given :  element X has the isotopes: ²⁵X (80.5% abundant) and ²⁷X (19.5% abundant).  Since Atomic…

Q: How many grams of platinum (Pt) contain the same number of atoms as 5.0 g of lithium (Li)? О а. 0.18…

A: Given, Mass of lithium (Li) = 5.0 g Mass (in grams) of platinum (Pt) contain the same number of…

Q: A sample of Mg(NO3)2 has a mass of 71.5 grams. how many atoms are in this sample? (molar mass is…

A: Mg(NO3)2 has a mass of 71.5 grams.  Molar mass of Mg(NO3)2 = 148.3 g/mol Formula used: Number of…

Q: 5) Naturally occurring chlorine that is put in pools is 75.53 percent "Cl (mass = 34.969 amu) and…

A: Total abundance of the element is 100%. Two isotopes are present.Abundance of Isotope Cl-35 = 75.53…

Q: You have 1 mole of oxygen (O₂) gas and 1 mole of ammonia (NH3). Which has more mass? 1 mole of…

A: We are given 1 mole each of Oxygen gas, O2 , and ammonia, NH3.

Q: A sample of a compound is found to contain 6.17 g carbon, 1.04 g hydrogen and 18.16 g chlorine. Its…

A:

Q: Consider two compounds. Compound A contains 2.77 g of phosphorus and 9.53 g of chlorine. Compound B…

A: Given,Mass of Phosphorus in compound B =11.9gMass of chlorine in compound B =40.9g

Q: 6) One mole of Ca and one mole of K contain A) The same number of protons B) Different amounts of…

A: One mole means the mass of a substance that contains Avogadro number of atoms. Avogadro number =…

Q: Naturally occurring bromine is composed of two isotopes: 50.69 % Br-79 (mass of 78.9183 amu) and…

A: Given,Naturally occurring bromine is composed of two isotopes:50.69 % Br-79 (mass of 78.9183 amu)…

Q: 1. What is the mass of 4.50x1023 atoms of magnesium? grams 2. How many magnesium atoms are there in…

A: To solve this problem we have to calculate the mass of Mg and atoms of Mg

Q: An unknown compound has the following chemical formula: CF where x stands for a whole number.…

A: Recall the formula of the unknown compound is C2Fx Given that the unknown compound contains 6.7 mol…

Q: What does an atom gain or lose when ions are produced? A)protons B)neutrons C)electrons

A: Option (C)

Q: You analyze a 42.6582 g sample of a compound comprised of 5.2279 g of carbon, 20.8914 g of oxygen…

A:

Q: Using the average atomic masses for each of the following elements, calculate the mass (in amu) of…

A: Average atomic masses of the following species is as follows - Na = 22.9898 amu Li = 6.941 amu Mg =…

Q: How many atoms does oxygen have in one mole of oxygen? 6.6 6.02E-23 3.14E-23 2.2

A: How many atoms  are present in one mole of oxygen  Solution is given below in next step

Q: What is the molar mass of aluminum chlorate, Al(Cl03)3? A)456.78 g/mol B)325.33 g/mol C)331.29 g/mol…

A: Molar mass of molecules  = sum of atomic masses of all the atoms present  Since in Al(ClO3)3 we have…

Q: 28 27.0769 92.23 Silicon 29 28.9765 4.67 30 29.9738 3.10

A: Calculate the average atomic mass ---

Q: On the fictional planet Zeus, bromine occurs as 34.05% of 79Br (atomic mass = 78.918 u) and 65.95%…

A: The average atomic mass can be mathematically determined as follows: Average atomic mass = MAXA +…