Answers
Answer :
Sugar : Compound
Air : Homogeneous mixture
Hot tea : Homogeneous mixture
Salt water : Homogeneous mixture
Explanation :
Element : It is a pure substance which is composed of atoms of similar elements.
Compound : It is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.
Heterogeneous mixtures : It is a mixture that has non-uniform composition throughout the solution and the particle size or shapes are also different.
There is a physical boundary between the dispersed phase and dispersion medium.
Homogeneous mixtures : It is a mixture that has uniform composition throughout the solution and the particle size or shapes are not different.
There is no physical boundary between the dispersed phase and dispersion medium.
As per question,
Sugar : It is a compound that is made from atoms of different elements combined together in a fixed ratio by mass.
Air : It is a homogeneous mixture of the gaseous substances of nitrogen, oxygen, and smaller amounts of other substances.
Hot tea : It is a homogeneous mixture because its composition is the same throughout the solution.
Salt water : It is a homogeneous mixture because its composition is the same throughout the solution.
Sugar compound
Air Homogeneous mixture
Hot tea Homogeneous mixture
Salt water Homogeneous mixture
Element:
An element is a simplest type of a pure substance which is composed of only one type of matter. For examples; silver, gold platinum etc.
Pure substance:
A compound is a pure substance which is composed of two or more type of matter in definite proportion. For examples; water which is composed by Hydrogen and oxygen etc.
Mixture:
A mixture is made from two or more type of matter in any proportion. Mixture are generally two types:
1. Homogeneous mixture
This is also known as solution, in which the composition of the substances is uniform.
Lemon-flavored water is an example of homogeneous mixture because in this the composition of the substances is uniform.
2. Heterogeneous mixture
In this form of mixture the composition of substance are not uniform and the component of mixture also visible.
Stuffed mushrooms is an example of Heterogeneous mixture because in this form of mixture the composition of substance are not uniform and the component of mixture also visible.
Related Questions
Which hybridization scheme occurs about phosphorus when nitrogen forms a triple bond?
Which statement defines calorimeter?a device that measures the heat that is gained or lost in a chemical changea device that measures the potential energy of an elementO a device that is used to measure heat capacityO a device that is used to measure temperature
When an electron moves up to higher energy levels, the atom Choose... a photon of light whereas the atom Choose... a photon of light when an electron drops to a lower energy level. The photons emitted from an atom appear as
Does the molarity of the solution change with the change in temperature?Match the words in the left column to the appropriate blanks in the sentences on the right.
O 3.04 x 1028
O 5.76 x 1029
O 6.02 x 1023
O 3.13
Answers
There are 5.78 × 10^20 sulfide ions in sodium sulfide
The formula of the compound is Na2S. The molar mass of the compound is calculated as follows; 2(23) +32 = 46 + 32 = 78 g/mol
Number of moles of Na2S = 0.15 g/ 78 g/mol = 0.0019 moles
Since there is 1 mole of Na^+ and 2 moles of S^2- in Na2S, the number of S^2- ions in 0.19 moles of Na2S is 0.00096 moles of S^2-.
If 1 mole of S^2- contains 6.02 × 10^23
0.095 moles of S^2- contains 0.00096 moles × 6.02 × 10^23/ 1 mole
= 5.78 × 10^20 sulfide ions
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A) less kinetic energy.
B)
more kinetic energy.
more total energy.
D) the same total energy.
Answers
Ice cream is colder and steam is warmer, something cold has the atoms moving slower which means it has less kinetic energy.
Hope this helps!
Answer:
its not more kinetic energy i put that and got it wrong
Answers
Answer:
12 mol CO₂
General Formulas and Concepts:
Atomic Structure
- Compounds
- Moles
- Mole Ratio
Stoichiometry
- Analyzing reactions rxn
- Using Dimensional Analysis
Explanation:
Step 1: Define
Identify
[rxn] 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
[Given] 2 mol C₆H₁₂O₆
[Solve] mol CO₂
Step 2: Identify Conversions
[rxn] 6CO₂ → C₆H₁₂O₆
Step 3: Convert
- [DA] Set up:
- [DA] Multiply [Cancel out units]:
Answers
Energy conversion can alter the state of matter by the release or absorption of energy. The snow on the driveway absorbed radiant energy to produce a physical change. Thus, option D is correct.
What is a physical change?
A physical change is a temporary change that is for a shorter duration of time and has been reversible as now new substance formation takes place. Instead, the old substance undergoes a change in the state of matter.
Snow is a solid state that absorbs radiant heat from the sun to get converted into water by melting. The melting of snow is a physical change as the state of matter gets altered by the absorption of energy. No chemical composition or properties were altered.
Therefore, option D. the melting of snow is a physical change.
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Answer:
The snow absorbed radiant energy to produce a physical change.
Explanation:
B. a change in
c. not related to
D. only an increase in
Answers
Answer:
option B is correct
Explanation:
impulse is a change in momentum
Answers
The density of the element in grams per cubic centimeter can be rewritten in kilograms per cubic meter as 11,300 kg/m³
What is the density of the element in kilograms per cubic meter?
Given the parameter:
The density of an element is 11.3 g/cm³
To convert the density from grams per cubic centimeter to kilograms per cubic meter, we can use the following conversion factors:
1 gram = 0.001 kilograms
1 cm³ = 1000000m³
Density in kg/m³ = Density in g/cm³ × (0.001 kg/g) × ( 1000000 m³/cm³)
Density in kg/m³ = 1000
Now, given the density of the element as 11.3 g/cm³:
Density in kg/m³ = 11.3 × 1000
Density in kg/m³ = 11,300 kg/m³
Therefore, the density of the element is approximately 11,300 kg/m³.
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Answer:
11.3 g/cm³ = 11.3x100x100x100/ 1000 = 11300kg/m³
Explanation: