The mass of a test tube and hydrate was 35.2755 grams. The mass of the empty test tube was 23.7726 grams. The mass of the anhydrous salt and test tube was 31.0035 grams. Find the mass of the original hydrate.

Q: Part A Silver has two naturaly occurring isotopes (Ag-107 and Ag - 109). Use the periodio table to…

A: • We need to determine the atomic mass of silver using the periodic table.

Q: Find the density of a neutron star with a mass of 1.97 solar masses and a diameter of 13 km, and…

A: Conversion units: 1 solar mass = 1.989×1030 kg 1 fm = 10-15m 1 km =1000 m 1 amu = 1.66×10-27 kg…

Q: What was the hypothesis tested by Rutherford?

A: For representing an atom, the New Zealand physicist, Ernest Rutherford, came up with the Rutherford…

Q: The number of protons in the piece of sodium (density 0.971 g/cm3) is equal to the number of…

A: Let the number of protons in the piece of sodium be x. Equal number of electrons are present in the…

Q: Find the mass of 1 atom of Chlorine in gram.

A:

Q: Archeologists discover a gold crown in an ancient tomb. When they place the crown in a tub of water…

A: In the question , Following datas given - (1) Volume of gold crown, displaced by it on placing it in…

Q: There are only two naturally-occuring stable isotopes of lithium, the masses of which are listed in…

A: Lithium has an elemental atomic mass of 6.941 u and has two naturally occurring isotopes, 6Li and…

Q: What is the symbol for neon?

A: Neon is a Nobel gas element. It's atomic number is 10. It is a colourless and orderless monoatomic…

Q: 'wrले लबकेबै (लि मुरकतकी कल् उ.।13 तकe्य ्भी काटोरे निवाण्र (ए Wान्न कन कर लाck्ये इर--8 s8. 698ाm

A: Answer: Given data: Moles of Nickel n=3.13mol Molar mass of Nickel M=58.69g/mol

Q: Sulfur and fluorine form several different compounds including sulfur hexafluoride and sulfur…

A: Reaction of formation of SF6 is as follows: Mass of Fluorine per gram of Sulphur in Sulfur…

Q: An atom of a particular element has a volume of 7.8*10^-31 m^3. What is this volume in cubic…

A:

Q: What did the scientist say when he found 2 isotopes of helium?

A: There are two isotopes of helium. He-4 and He-3 are the two isotopes of helium.

Q: Which of the following is not a correct mass of one sodium atom? a) 23 amu b) 23 g c) 3.82x10-23 kg…

A:

Q: Convert each given mass to number of representative particles. Identify thetype of representative…

A: a) 4.56×103 g Si Number of particles means number of molecules. Since, Number of particles in…

Q: Dalton theorized that matter is made of tiny invisible particles called atoms. in what way did the…

A: The most significant of all the Dalton’s investigations were related with the atomic theory.…

Q: Determine the number of atoms in 1.85×10^-3L of Mercury. [The density of mercury is 13.5g/mL.]

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Q: Vi-50 has a mass of 49.9472 amu and Vi-51 has a mass of 50.9440 with an average mass of 50.9415 amu.…

A: Consider the abundance of Vi-50 is X% and the abundance of Vi-51 is (100-X) %. The average atomic…

Q: A sample of alumminum foil contains 7.5*1023 atoms. What is the mass of the foil?

A: Given : Number of aluminium atoms in the foil = 7.5 X 1023

Q: The volume of a single iridium atom is 1.04x10-23 cm³. What is the volume of a iridium atom in…

A: Given: Volume of iridium in cm3 = 1.04 X 10-23 cm3.

Q: Antinomy, Sb, has 2 isotopes and an atomic weight of 121.75 amu. The isotope anitimony-121 has a…

A:

Q: Find the number of atoms in a copper rod with a length of 8.85 cm and a radius of 1.00 cm. The…

A: First the copper rod mass is calculated using the volume and the given density values as follows,

Q: The volume of a single potassium atom is 5.16×10-23 cm³. What is the volume of a potassium atom in…

A: Given:The volume of a single potassium atom is 5.16×10-23 cm3.we have to find the volume of a…

Q: mass of the water

A:

Q: Complete the following shorthand notations: ? (р, а) $Li 31p (a, ?) 1čS 242Cm (a, n) ? Mg (? ,p) iNa…

A: To find: The complete shorthand notation for the given compounds

Q: Ca is 42 Mass =

A:

Q: The atomic weight of silicon is 28.0855. Round this to 4 significant figures.

A: Given :- atomic wt. of Si = 28.0855  To determine :- given atomic wt. in 4 sig. figs

Q: A sample of aluminum foil contains 8.00×10238.00×1023 atoms. What is the mass of the foil?

A:

Q: A sample of carbon weighting 1.48 g was burned in an excess of air. The mass of carbon dioxide, the…

A: This can be calculated in context to the percent mass of carbon. The reaction occurring in the…

Q: Discovering which of the three subatomic particles proved to be the most difficult—the proton,…

A: From three subatomic particle - the proton, neutron and electrons : Answer :            The NEUTRON…

Q: A sample of aspirin synthesized in the laboratory contains 26.0 g of carbon and 15.4 g of oxygen. A…

A: Given : 1st sample contains 26 g of carbon and 15.4 g of oxygen. 2nd sample contains 8.16 g of…

Q: = tr²l (l= length of wire) The density of copper at 20°C is 0.896 kg/dL at 20°C. A copper wire has a…

A: Given that,  The diameter of wire - 0.110 mm = 1.1 x 10-4 m; radius - 5.5 x 10-5 m.The atomic mass…

Q: Calculate the mass of oxygen in a 2.25 g sample of borax

A: Given Mass of Borax = 2.25 g

Q: Match each scientist to their experiment. JJ Thomson Ernest Rutherford Robert Millikan :: Oil Drop :…

A: Electrons , protons and neutrons are called sub atomic particles. Sub atomic particles are…

Q: The two naturally occurring isotopes of antimony are ¹2¹ Sb and 123Sb whose exact isotopic masses…

A: Given: Average atomic mass of Sb = 121.8 amu Isotopic mass of 121Sb = 120.904 amu Isotopic mass of…

Q: some chlorine atoms have an atomic mass of 37, while others have an atomic mass of 35. What is the…

A: The mass number of an atom is the sum of proton and neutrons present in that atom.  Mass number =…

Q: Calculate the mass in grams of 1 neutron given the following conversion factors: 1 n° = 1.008665…

A: Given  1n0 = 1.008665 amu 1 amu = 1.660538 x 10-24 g

Q: Element Z has two naturally occurring isotopes. The isotope with a mass of 10.012 amu (10Z) has a…

A: Average atomic mass of element Z  = 10.012 amu × 0.1991 + 11.009 amu × 0.8009 = 10.810 amu ≈ 10.81…

Q: Express the masses of proton and neutron using six significant figures. Express the mass of electron…

A:

Q: Carbon-12 contains six protons and six neutrons. The radius of the nucleus is approximately 2.7 fm…

A: SOLUTION: Step 1: 1 fermi meter = 10-15 m 1 picometer = 10-12 m The volume of the nucleus is…

Q: Carbon-12 contains 6 protons and 6 neutrons. The radius of the nucleus is approximately 2.7 fm…

A:

Q: How is the chemical symbol of an element determined? Explain in 200 words.

A: Given : Elements  To find : Chemical symbols Solution : Elements are those Compounds which cannot be…

Q: The mass of a proton is 1.67 × 10-27 kg. What is the mass of a proton in  gigagrams? Giga     G…

A: Given ,  Mass of proton = 1.67 × 10-27 kg = 1.67 × 10-27 × 103 g = 1.67 × 10-24 g [ * 1 kg = 103 g ]…

Q: 23. The two naturally occurring isotopes of antimony are 12"sb and 12sb whose exact isotopic masses…

A:

Q: A neutron star has a density of 5.0 x 1017 kg/m3. How many ?μL of space would 5.0x106 metric tons…

A:

Q: Given the only naturally occurring isotope of sodium is Na-23, determine its mass from the periodic…

A: The elements having the same atomic number but different atomic masses are known as isotopes. There…

Q: Which of the following is not a correct mass of one sodium atom? a) 23 amu b) 23 g c) 3.82x10-23 kg…

A:

Q: Lithium has only two naturally occurring isotopes. The mass of lithium-6 is 6.01512 amu and the mass…

A: Lithium has only two naturally occurring isotopes. The mass of lithium-6 is 6.01512 amu and the mass…

Q: the atoms listed below, which has the largest mass?   A. all have the same mass B. lead C. uranium…

A: Atoms which have more number of neutrons and protons have greater mass because mass is due to…

Q: The mass of a neutron is 1.6749×10−24 gg , and the mass of a proton is 1.6726×10−24 gg . What is the…

A:

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.