(BASIC QUESTIONS) Choose  the phase of matter that is being described CHOICES: GAS LIQUID EITHER NEITHER Undergoes deposition Has no definite volume Stronger intermolecular forces of attraction Group VIIIa elements at room temperature Smaller distance between each particle

Q: Mg(OH), is a compound. How many different elements are found in this compound? 3.

A: The substance which is formed by one type of atoms are known as element.

Q: Refer to the Chemical Compounds table above. How many total elements are in Ethanol?

A: • Ethanol is an organic chemical compound.    • The functional group in ethanol is -OH (i.e.…

Q: Classify these substances. More than one answer may apply in each case. N2 solution O homogeneous…

A: Element - It is a pure substance made up of only a single atom.  Compound - It is a pure substance…

Q: Sublimation, Extraction, Decantation, Filtration, Evaporation 2. Can any of the methods listed be…

A: Methods used for the separation of elements from compounds are

Q: 1. Group VIIIa elements at room temperature 2. Highest kinetic energy among its molecules 3.…

A: 1.Group VIIIa elements at room temperature - GAS ( The noble gases of Group 8A (He, Ne, Ar, Kr, Xe,…

Q: 7) To elements in the gas state react to form a new compound. Based on the state of matter of the…

A: Reactions in which two or more chemical species combine to form an entirely different species is…

Q: classify to be solid, liquid or gas     Particles are close together but are not held rigidly…

A: To identify whether the given statement represents solid, liquid or gas.

Q: Question 16 Which one of the following is a physical change? A. CH4(g) +202(g) → 2H₂O(g) + CO2(g) C.…

A: Q-16)  A physical change is :-  H2O (s) →H2O (l) (Option- C)

Q: Choose every description below that always is true of a substance. O composition and properties are…

A: Substances are the pure and single form of matter. They have specific properties and composition.…

Q: Solve this

A: The element contains one type of atoms only. The compound has two or more elements. The chemical and…

Q: Consider the following solids. The solids A, B, and C represent aluminum (D = 2.70 g/mL), gold (D =…

A: •  Density = MassVolume→           Density  ∝ 1VolumeSo,         if volume increases ⇒ Density…

Q: Composition C-4 is a plastic explosive having a density of 1.05 g/cm3. Calculate the mass of a brick…

A: Given,  Density (D) of C-4 plastic explosive brick = 1.05 g/cm3 Volume (V) of C-4 plastic explosive…

Q: Which phase of matter is made up of particles that are packed relatively close together, with an…

A: Solid- In solids, particles are tightly packed. They have fixed shape as well as volume. Thus solids…

Q: Explain in your own words, by writing a short paragraph, how the atomic theory explains…

A: Law of conservation of mass states that atoms are neither created nor destroyed during a chemical…

Q: 200 g of a silicon compound is decomposed, resulting in 41 g of solid silicon and the remainder of…

A: Calculate the number of moles of both the compounds. nSiClF3 = WSiClF3MSiClF3nSiClF3 =200 g120.5…

Q: Classify the substance shown in the sketch below. You can click the other tabs in the sketch to get…

A: In chemistry, compounds are classified as solid, liquid, or gas based on their physical and chemical…

Q: In a laboratory experiment, an undergraduate student collected a sample of ammonium phosphate. If…

A:

Q: How many grams of oxygen (O) are present in a 6.41 g sample of potassium nitrate (KNO3)? Enter your…

A: Potassium nitrate (KNO3) is ionic compound and it contains one potassium, one nitrogen and three…

Q: Which of the following elements is a good conductor of heat and electricity? neon chlorine carbon…

A: Substance having free electrons undergo movement, By movement they conduct electricity.  These free…

Q: in her pocket for a few hours. When she took out the chocolate bar to eat it, the bar was was no…

A: Given, examine the state of the chocolate bar in the morning and then in the evening.

Q: If you calculated the molar mass of your unknown liquid to be 70.1 g/mol, which of the following do…

A: Given-> Calculated molar mass of unknown liquid =70.1 gm/mole.

Q: Atoms are the smallest spherical particles that make up any matter. If 6.0x10^23 atoms of aluminum…

A: Avogadro’s number is used to determine the number of atoms present in 1 mol of an element.…

Q: (BASIC QUESTIONS) Choose or tick the phase of matter that is being described CHOICES: GAS LIQUID…

A: Matter is divided into three different category named as solid, gas and liquids depending on the…

Q: Has both definite shape and definite volume. gas solid O liquid

A:

Q: Rubidium has two naturally occurring isotopes, Rb-85 (mass 84.912 amu) and Rb-87 (mass 86.909 amu).…

A:

Q: Which of the following are extensive properties? Choose all that apply. Mass O Density O Volume…

A: In thermodynamics, two types of properties present- 1)Intensive property 2)Extensive property

Q: 4. Below each box, identify the class of matter (element, compound, mixture of elements or mixture…

A: Element: An element is formed by only one type of atom. All the atoms in the element are the…

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

A: a. Given that weight of hydrated salt is 6.790 g and mass of anhydrous salt is found to be 4.501 g.…

Q: Compound Chemical Formula Elements & Image then write “molecule" or "compound" Uses/Where it is…

A: The given table showing different molecules and compounds. Every molecule has different properties…

Q: Which of the following can be more completely broken down? a) Petrochemicals b) Metals c)…

A: Among the given options, Petrochemical = does not break completely. Metals = does not break.…

Q: Calculate the radius in nanometers of a metallic atom given that it has a BCC structure and a…

A: At first, we have to find the value of edge length from the crystal density formula, then, radius .…

Q: A pure substance is: O composed of two or more regions with different compositions. O composed of…

A: Here we have to define pure substance.

Q: classsify into solid, liquid or gas Particles are close together but are not held rigidly…

A: To identify whether the given statement represents solid, liquid or gas.

Q: depicts

A: According to the question, we need to determine which image depicts a homogenous mixture.  We know…

Q: One of the inherently satisfying features of chemistry is that chemical materials form and interact…

A:

Q: Determine how many grams of oxygen will be reacted given 32grams of hydrogen H2 gas.

A: Given Mass of H2 gas  = 32 gram  Mass of O2 gas  = ? Molar mass of H2   =( 2 ×1 )…

Q: 21.1 g O2 20.5 g C8H10 Express the answers in molecules to three significant figures

A: Given data 21.1 g O2 20.5 g C8H10 The number of molecules present in the given species are

Q: Question 16 Which one of the following is a physical change? A. CH4(g) + 2O2(g) → 2H₂O(g) + CO2(g)…

A: For question 16, we have to find the process that indicates a physical change. For question 17, we…

Q: A sample of a compound has a mass of 41.13 g. The sample is found to contain 37.28 g of carbon and…

A: The mass of the sample compound is = 41.13 g The mass of carbon in this sample is = 37.28 g The mass…

Q: A nutrition table lists apples with a potassium content of 4600 mg/pound. Assume an average apple is…

A: According to the given data, Mass of an average apple = 75.0 g Because, 454 g = 1 poundMass of an…

Q: A hollow spherical iron ball has a diameter of 15.3 cm and has a mass of 13.5 kilograms. Assuming…

A: Given: Diameter of the outer sphere = 15.3 cm Mass of sphere = 13.5 Kg = 13500 g…