Answer : The correct option is, (D) 
Explanation :
(A) 
This reaction is a double displacement reaction in which the cation and anion of two reactants are exchange their places to give two different products.
(B) 
This reaction is a decomposition reaction in which the larger molecule decomposes to give two or more products.
(C) 
This reaction is a neutralization reaction in which an acid and a base react to give a salt and water as a product.
(D)
This reaction is a redox reaction in which the oxidation and reduction reaction occur simultaneously.
Oxidation reaction is the reaction in which a substance looses its electrons. In this oxidation state increases.
Reduction reaction is the reaction in which a substance gains electrons. In this oxidation state decreases.
In this reaction, magnesium shows oxidation due to change in oxidation number from (0) to (+2) and hydrogen shows reduction due to change in oxidation number from (-1) to (0).
Hence, the correct option is, (D)
Answer:
Summary. An increase in the number of gas molecules in the same volume container increases pressure. A decrease in container volume increases gas pressure. An increase in temperature of a gas in a rigid container increases the pressure
Answer:
Enzymes are homogenous, thermolabile,biological catalyst that increases the reaction rate of a chemical reaction.
Explanation:
Enzymes are used as catalyst in many biochemical reactions.Enzymes basically interact in a complementary fashion with the transition state of the reaction thus helping to decrease the energy barrier called activation energy.Thus enzymes helps to stimulate the velocity of biochemical reaction.
It is very important point to note that enzymes do not affect the reaction equilibrium.
I will mark brainlist please help
1) what is the subject of a sentence?
• the verb
• tells who or what the sentence is about
• the action in the sentence
2) What is the predicate of a sentence?
• who the sentence is about?
• tells what the subject is or does
3) What is the PREDICATE in this sentence.
- Mrs. Shaffer is crazy
• Mrs. Shaffer
• is
• is crazy
• Shaffer is crazy
4) what is the predicate of this sentence.
- Friday is the best day of the week
• Friday
• is the best day of the week
5) What is the subject of this sentence?
- The turtle is swimming in the ocean
• the turtle
• is swimming in the ocean
6) What is the the complete predicate of this sentence?
- The class studied whales.
• class
• the class
• whales
• studied whales
7) What is the predicate in the sentence
- She drank her whole glass of milk
• she
• milk
• drank her whole glass of milk
• drank milk
8) what is the subject in the sentence?
- The music class attended the opera.
• the music class
• attended
• music
9) identify the complete subject.
- Susan and Kay went swimming.
• went swimming
• Susan and Kay
• went
10) identify the COMPLETE predicate
- Tina and her friends went to the movies
• Tina
• her friends
• to the movies
• went to the movies
11) identify the SIMPLE PREDICATE PART.
- Tina and her friends went to the movies
• Tina
• her friends
• went
• the movies
12) identify the circled line in the sentence.
- All of the ((((PLAYERS)))) went to practice
• complete subject
• simple subject
• simple predicate
• complete predicate
Answer:
0.2g
Explanation:
All radiodecay follows the 1st order decay equation
A = A₀e^-kt
A => Activity at time (t)
A₀ => Initial Activity at time = 0
k => decay constant for isotope
T => time in units that match the decay constant
Half-Life Equation => kt(½) = 0.693 => k = 0.693/34 min = 0.0204min¹
A = A₀e^-kt = (26g)e^-(0.0204/min)(238min) = (26g)(0.0078) = 0.203g ~ 0.2g (1 sig fig).
