Answer:
Scientist use the scientific method to test theories.
Explanation:
Scientists use a range of skills, primarily the scientific method, and tools, such as various lab equipment and technology, to conduct their research.
Scientists use a variety of skills and tools to conduct their research and investigations. The primary skill they possess is the scientific method, a systematic way of understanding the world around us, which involves observation, question formulation, hypothesis testing, data collection, data analysis and conclusion drawing.
As for tools, scientists use a range of laboratory equipment like microscopes and pipettes for biological research, telescopes for astronomical studies, spectrophotometers for chemical analysis, computers for data analysis, and more. Technology is greatly used in science as it aids in thorough and precise investigations.
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Answer and Explanation:
It is worthy to be mentioned that the equilibrium in this reaction is dynamic equilibrium.
Answer:
In a chemical reaction equilibrium is in the state which reacts with both products and reactants. Both reverse and forward are happening and both reaction rates forward and reverse are equal.
Explanation:
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Answer:
No, because it is an intensive quantity.
Explanation:
According to IUPAC, an intensive quantity is one whose magnitude is independent of the size of the system/sample, on the other hand an extensive quantity is one whose magnitude is additive for subsystems.
Exemples of intensive quantities: temperature, density, concentration.
Exemples of extensive quantities: mass, volume, energy.
Equation
CaCO3 ===> CaO + O2
Solution
If you start with this equation, then the balance numbers (molar ratios) are
If you want 2.35 moles of CaO then you are going to have to start out with 2.35 moles of CaCO3
In the decomposition of calcium carbonate to form calcium oxide, there is a 1:1 mole ratio. Therefore, to get 2.35 moles of calcium oxide, 2.35 moles of calcium carbonate are required.
To answer this question, you need to consider stoichiometry, which is the study of the relationships or ratios between the amounts of products and reactants in chemical reactions. The balanced chemical equation for the thermal decomposition of calcium carbonate (CaCO3) to form calcium oxide (CaO) and carbon dioxide (CO2) is:
CaCO3(s) → CaO(s) + CO2(g)
This equation tells us that 1 mole of CaCO3 will produce 1 mole of CaO. Therefore, if we need 2.35 moles of CaO, we would need 2.35 moles of CaCO3 because of the 1:1 mole ratio in the chemical reaction.
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Answer :
Double replacement reaction : It is a type of reaction in which a positive cation and a negative anion of the reactants react to give a new compound as a product.
In this, A and C are the cations and B and D are the anions.
When one mole of potassium hydroxide react with the one mole of zinc chloride to give one mole of zinc hydroxide and 2 moles of potassium chloride.
The balanced chemical reaction is,
(b) by sharing electrons with each other
(c) by losing neutrons to each other
(d) by losing electrons
Answer:
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Explanation:
Answer:
The most commonly found element in the earth's crust is Oxygen.
Explanation:
The atomic umber of Oxygen is 8.The electronic configuration of oxygen is 2,6.It belongs to the chalcogen family in the periodic table.It is a strong oxidizing agent and highly reactive non-metal.The amount of oxygen present in the earth's crust is 46.6%.The oxygen exists in two forms ,they are (oxygen) and (ozone).The major compound of it exists in the form of silicate minerals where it combines with other minerals.It also exists i the compound as carbonates and phosphates. Oxygen with acetylene is used to cut and weld the metals.In the medical field,Oxygen is used to ease the respiratory disease and it is also used to manufacture the the explosives.
Answer:
water/h20
Explanation:
the earth is mostly contained of water