Na₂ S₂O₃ ( aq ) + 2HCl ( aq ) = 2NaCl ( aq ) + H₂O ( l ) + SO₂ ( g ) + S ( s ) this solution goes cloudy because the student placed a conical flask over a cross on a piece of paper.
The speed at which a chemical reaction occurs is known as the reaction rate or rate of reaction. It is proportional to the rise in product concentration per unit time and the fall in reactant concentration per unit time. Reaction times might differ significantly.
The norm is to write reactant or product]to indicate the concentration of any reactant or product, respectively. Therefore, A's concentration may be represented as A, and B's concentration as [B]. Assume that the reaction starts at time t =0 , which is the start time.
Regarding Hcl, the reaction rate is zero-order. To get rid of the sulfur, empty the beakers and give them a good cleaning with paper towels.
Sulphur dioxide, sodium chloride, sulphur, and water are the products of the reaction between sodium thiosulphate and diluted hydrochloric acid. Sulfur dioxide is a gas with the capacity to entirely dissolve in aqueous solutions.
Thus, option A is correct.
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Water would heat up the slowest if four substances were exposed to sunlight because it has the highest specific heatcapacity.
Specific heat capacity is the amount of thermal energy required to raise the temperature of a system by one temperature unit (1°C) without any change of phase.
According to this question, a table comprising the specific heat of four substances were given. In the table, water has the highest specific heat capacity.
This means that water would heat up the slowest if four substances were exposed to sunlight because it has the highest specific heat capacity.
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Answer:
160 I think or 200
Explanation:
the lines are pulling on the same side so you add those
b. decomposition
c. double replacement
d. substitution
B. Decomposition, I remember reading this in my student workbook. Hope this helped!
Answer: Iron is considered as a Group B element.
Explanation:
Mendeleev divided the periodic table into 8 groups, each divided into two sub-groups named as A and B. He arranged the elements according to their atomic masses.
Group A elements are considered as the elements which are present in s-block and p-block.
Group B elements are the transition elements. Transition elements are the elements that belong to d-block.
From the given elements:
Lithium (Group 1-A) and helium (Group VIII-A) are s-block elements.
Tellurium is a p-block (Group VI-A)element.
Uranium is a f-block element.
Iron is the d-block (Group VIII-B)element (transition element)
Hence, iron is considered as a Group B element.