Which of the following pairs of items will be attracted by one another?A. A positively charged pith ball and a negatively charged glass rod
B. Two positively charged pith balls
C. A negatively charged pith ball and a negatively charged glass rod
D. Two negatively charged pith balls
Answers
Answer : Option A) A positively charged pith ball and a negatively charged glass rod
Explanation : The pair of items that will be attracted by one another is a positively charges pith ball and a negatively charged glass rod.
According to the charge interactions rule, it is state that opposite charges always attract each other and like charges repel each other.
When opposite charges come near to each other there is a pull generated to get attracted, like a north and south pole of a magnets.
whereas when like charges are brought together they try to push each other in opposite direction, like north-north pole of magnets or south-south pole of magnets.
In the given example the pith ball is having positive charge which when brought near the negatively charged glass rod gets attracted.
Opposites attract
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b. Alkyne series
c. Saturated hydrocarbons
d. Unsaturated hydrocarbons
e. Aromatic hydrocarbons
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pOH scale is used to determine the basicity of a solution
pH scale is used to determine the acidity of a solution
pH and pOH are related in the following formula
pH + pOH = 14
once pOH is known we can calculate pH
pOH = 8.7
pH = 14 - 8.7
pH = 5.3
pH of the solution is 5.3
when pH is less than 7 the solution is said to be acidic
when pH is equal to 7 then solution is neutral
when pH is more than 7 then solution is basic
the pH of the solution here is 5.3 which is less than 7, therefore solution is acidic
acidic solution with pH of 5.3
pH = 14 - pOH
pH = 14 - 8.7
pH = 5,3
This solution is acidic.
If pH<7 - acidic
If pH=7 - neutral
If pH>7 - basic
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Hydrogen is being oxidized in the given reaction CO2 + H2 → CO + H2O. the carbon atom in CO2 is reduced to CO, while the hydrogen atoms in H2 are oxidized to H2O.
How is that so?
Oxidation is the loss of electrons, while reduction is the gain of electrons. To determine which class is being oxidized and that is being diminished, we can equate the oxidation states of the materials in the reactants and produce.
In CO2, the element atom has an oxidation state of +4, while the oxygen atoms each have an disintegration state of -2. In H2, each hydrogen atom has an decay state of 0.
In CO, the element atom has an oxidation state of +2, while the oxygen dot in H2O has an oxidation state of -2. The hydrogen atoms in H2O each have an disintegration state of +1.
Therefore, the carbon atom in CO2 is decreased to CO, while the hydrogen atoms in H2 are oxidized to H2O.
Learn more about Oxidation here: brainly.com/question/13182308
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MgO + CO2
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Mg O + C O2 → Mg C O3
The product is Magnesium Carbonate.
Answer : The product formed in the combination reaction is, magnesium carbonate,
Explanation :
Combination reaction : It is a chemical reaction in which multiple substances or reactants combine to form a single product.
The balanced chemical reaction will be,
This reaction is a combination reaction in which the magnesium oxide react with the carbon dioxide to give magnesium carbonate as a product.
Hence, the product formed in the combination reaction is, magnesium carbonate,
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Answer:
B: reliable because testable facts are presented
Explanation:
give the other guy brainliest he got here first
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Cl₂ = 71.0 g/mol Na = 23.0 g/mol
2 Na + Cl₂ = 2 NaCl
2 x 23 g Na -------> 71.0 g Cl₂
96.6 g Na ----------> ?
Mass Cl₂ = ( 96.6 x 71.0 ) / ( 2 x 23 )
Mass Cl₂ = 6858.6 / 46
= 149.1 g of Cl₂
hope this helps!