The amount of time it takes for an amount of specific isotope to Decay to half the original amount

Answers

Answer 1

Answer:

Answer: Half life

Explanation: Half life is the amount of time taken to reduce the original concentration of the reactant to half of its value.

Rate law expression for first order kinetics is given by:

$t=(2.303)/(k)\log(a)/(a-x)$

where,

t= time taken for the decay

k = rate constant

t = time taken for decay process

a = initial amount of the reactant

a - x = amount left after decay process

for half life: $t=t_(1)/(2)$

a-x = $(a)/(2)$

$t_(1)/(2)=(2.303)/(k)\log(a)/(a/2)$

$t_(1)/(2)=(0.693)/(k)$

Answer 2

Answer: It is called Half life, to find one the formula is A=Ao(0.5)^(T/H)
A=amount
AO=Initial Amount
T=Time
H=Half life

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Answers

Answer:

Observe the effect of various fertilizers on corn crop yields

Explanation:

I think I'm right

Answer:

Observe the effect of various fertilizers on corn crop yields

Explanation:

Which element acts as a hydrogen acceptor during aerobic respiration?(A) hydrogen
(B) carbon
(C) oxygen
(D) nitrogen
(E) phosphorus
Can someone explain this one for me?

Answers

The answer is C. oxygen. Oxygen is the acceptor for hydrogen because in an aerobic reaction oxygen is used.

the answer is C) oxygen.

It accepts hydrogen, and during the process of respiration, it forms H2O molecules, which are exhaled as water vapour.

The term used to describe a harmless organism resembling a harmful one is _____.

Answers

The correct answer to the question above is Batesian mimicry. The term used to describe a harmless organism resembling a harmful one is called Batesian mimicry. Batesian mimicry is a form of mimicry in which harmless organism had adapted to imitate the predators.

Energy used by the body to perform muscular contractions is called adenosine diphosphate, or ADP.a. Trueb. False

Answers

Answer:

The energy used for muscular cont ration is ATP(adenosine triphosphate) This is the energy currency produced in the mitochondrial during cellular respiration.

During muscles contraction.The ATPs is broken down to ADP and Pi.

This is the breakdown of energy rich bonds binding phosphate ions with ATP.The breakdown of the bonds produced -32kJper the 3 bonds in ATP. Therefore as each bond is broken, energy is produced for muscle contraction

It is an exergonic reaction with production of heat.

Thus ATP is used for muscle contraction.ADP is the intermediate of ATP when one Phosphate is removed during the breakdown.

Thus the sequence is Adenosine triphosphate (3 phosphate) to Adenosine diphosphate(2 phosphate) to Adenosine monophosphate (1 phosphate)

Each bond breakin gives equal energy of -32kJpermol.

Explanation:

An organism has the following characteristics: cell wall, heterotrophic, unicellular, and prokaryote. What kingdom does it belong in?

Answers

Answer:

Bacteria

Explanation:

Bacteria are unicellular microorganisms, in other words, they have a single cell, with the genetic material spread by the cytoplasm.

In addition, bacteria have no nuclear envelope or specialized organelles, these are characteristics of prokaryotes.

There are autotrophic bacteria, capable of synthesizing their own food, while heterotrophic bacteria (parasitic bacteria) get food from living things, causing disease to them.

In addition, bacteria have a protection on the outside of the plasma membrane called cell wall (usually composed of amino acid-bound sugars).

Note: Bacteria were formerly part of the monera kingdom, however, the term "monera" is not currently used (except for some books) and the kingdom has been divided into Bacteria and Archaea.

hmmm i believe it's protista

Water is drawn upward from the roots through plant tissue to the leaves by

Answers

water exaporates frm the leaves and other parts of the plant above the ground. The evaporation of water from the plant is called ''transpiration''. It occurs mainl through the stomata. However, as quickly as water is lost from the leaves, more water enters the roots and flows up the stem. The water flows up the plant in narrow pipes, rather like capillary tubes. These tubes make up the xylem. The walls of the tubes are made of lignin, which is hard and waterproof. In trees and shurbs the xylem tubes are one of the main components of wood. They do not contain living material and are therefore dead.` Water rises up the stem mainly by being ''pulled'' from above. The ''pull'' is created by the evaporation if water from the leaves. If you stop this by, for example, cutting iff the leaves or blocking the stomata, the flow of water up the stem slows down or stops. The drier the atmosphere, the greater is the rate of transpiration. In very dry wather, water may evaporate from the leaves faster than it is replaced from the soil. The plant then suffers from water shortage. Normally a plant's cells are full of water, and all the cells are pressing against each other within the epidermial covering. This helps to support the plant amd holds the leaves out flat. If a plant runs short of water, the cells lose water and go flabby. The plant then droops. This is called wilting. Plants living in dry places have all sorts of adaptations for not

THE CORRECT ANSWER IS A) CAPILLARY ACTION

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