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MrRa [10]
3 years ago
8

What is the name for a change in the enviorment that causes an organism to change it's activity

Chemistry
2 answers:
Leokris [45]3 years ago
7 0

Answer: it’s D

Explanation:an event that provokes a specific functional response in an organ or tissue of an organism is called as stimulus

hope it helps

irinina [24]3 years ago
5 0
ANSWER: D (Stimulus)is the name for a change in the environment that causes an organism to change its activity
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When attempting a Grignard reaction, you add the correct molar amount of acetone but what you didn’t know was that your lab part
DerKrebs [107]

Answer:

The products formed are

2-methyl-3-isopropylnonan-3-ol and 2-methyloctan-2-ol

The products should be in equal ratio since an equipmolar amount of acetone and 2,4-dimethylpentan-3-one was initially present as reactants

Explanation:

Ketones reacts with gridnard reagents to form tertiary alcohol, and since acetone and 2,4-dimethylpentan-3-one are both ketones, gridnard reagent reduced both to tertiary alcohols:2-methyl-3-isopropylnonan-3-ol and 2-methyloctan-2-ol

8 0
3 years ago
How many kilojoules are required to convert 115.0 g of ice at 0.0 ∘c to liquid water at 32 ∘c? the heat of fusion of water is 33
Ivanshal [37]
The answer is 53.8 kJ.
Solution:There are two major steps in converting ice to liquid water. It begins with a phase change when ice melts at 0.0°C, and then a temperature change when the liquid water rises in temperature from zero to 32°C.
The amount of heat involved with the phase change melting is given by
     q = (mass of water) (ΔHfus)
        = (115.0 g)(334 J/g) 
        = 38410 J = 38.41 kJ
The amount of heat involved with temperature change is 
     q = mcΔT
        = (115.0g)(4.184J/g°C)(32°C - 0.0°C)
        = 15397.12 J = 15.39712 kJ
Summing up the two values gives the total heat required to convert ice to liquid water:
     q = 38.41 kJ + 15.39712 kJ= 53.8 kJ
3 0
3 years ago
In a double-replacement reaction, there are two reactants and ____________________ product(s
bixtya [17]

Answer:

Two

Explanation:

In a double-replacement reaction, there will be two reactants and two products.

It is called double replacement reaction because one element in reactant 1 replaces an element in reactant 2 and other element in reactant 2 replaces other element in reactant 1.

Here two replacements are taking place. Hence, this is called double replacement reaction.

A Neutralization reaction i.e an Acid - Base reaction is a good example of Double replacement reaction.

An Example is provided below for better understanding :

HNO3 + NaOH --> NaNO₃ + H₂O.

Here HNO₃ is the acid and NaOH is the base which are the reactants.

NaNO₃ and H₂O are the products.

This is a double replacement reaction because,

Hydrogen(H) in  HNO₃ replaces Sodium(Na) in NaOH, and

NO₃ in HNO₃ replaces OH in NaOH.

Here, there are 2 reactants and 2 products.

3 0
3 years ago
Which is a property of matter that you CANNOT observe just by looking at an object?
Sedaia [141]

Answer:b

Explanation:

7 0
3 years ago
Read 2 more answers
If a gas occupies 1.5 liters at a pressure of 3.0 atm, what will be its pressure at a volume of 2.0 liters?
Sphinxa [80]

Answer:

P2 = 2.25 atm

Explanation:

Given:

V1 = 1.5 L. V2 = 2.0 L

P1 = 3.0 atm. P2 = ?

Use Boyle's law and solve for P2:

P1V1 = P2V2

or

P2 = (V1/V2)P1

= (1.5 L/2.0L)(3.0 atm)

= 2.25 atm

8 0
3 years ago
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