1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mariana [72]
3 years ago
7

True or false: in a chemical reaction matter cannot be created or destroyed.

Biology
2 answers:
never [62]3 years ago
6 0
If ur teacher says that matter and energy r the same den it will be true bc u can't destroy energy
(Had many teachers who said it was the same and some that didn't)
il63 [147K]3 years ago
3 0
Pretty sure its truth / no edit here
You might be interested in
Researchers tested the effects of acid rain on seedlings of two different species, camphor tree (cinnamomum camphora) and chinab
strojnjashka [21]
40%-THE HEIGHT WITH DISTILLED WATER WAS 25, WHILE WITH A PH OF 2 IT WAS 15, THEREFORE A 40% REDUCTION IN HEIGHT WAS OBSERVED.
4 0
3 years ago
Read 2 more answers
A sand storage tank used by the highway department for winter storms is leaking. As the sand leaks out, it forms a conical pile.
harina [27]

Answer:

Rate of change of volume of the pile  = 54\pi

Explanation:

Given -

Rate of increase of the base of the pile = 0.75 inches per minute

Height of the pile = 2 * the radius of the base

Let "h"  be the height of the pile and "r" be the radius of the base.

Then h = 2* r

Radius "r" = 6 inches

Rate of change of radius i.e

\frac{dr}{dt} = 0.75

Volume of conical pile

\frac{\pi }{3} * r^2 * h\\= \frac{\pi }{3} * r^2 * 2 * r\\= \frac{\pi }{3} *2* r^3

Change in volume of conical pile

\frac{dV}{dt} =  \frac{dr}{dt}  * \frac{6* \pi * r^2 }{3}

Substituting the value of rate of change of radius, we get -

\frac{dV}{dt}  = 2 * \pi * (6^2) * (0.75)\\\frac{dV}{dt}  = 54 \pi

Rate of change of volume of the pile  = 54\pi

8 0
3 years ago
What are plankton and where do they reside?
oee [108]

Answer:

They are organisms (individual organisms called "plankters") that live in large bodies of water.

Explanation:

They reside in large bodies of water (oceans, lakes, etc). They are usually abundant in surface waters because all ecosystems of plankton live off input of solar energy.

5 0
3 years ago
Why does the amount of daylight we see each day change throughout the year?
vredina [299]
Because the earth's rotation isn't a perfect circle, so it gets different amounts of sun in certain times
5 0
3 years ago
Read 2 more answers
Help please!........................................................
bogdanovich [222]

Answer:

The correct order would be

  • Glucose
  • ATP→ADP
  • H₂O
  • Pyruvate
  • CO₂

Explanation:

Following reactions occur in Glycolysis and Kreb's Cycle

  1. Phosphorylation of Glucose- In the first step of glycolysis, Glucose is converted into Glucose-6-Phosphate using 1 ATP molecule by Hexokinase enzyme. One phosphate group from ATP is attached to glucose by the enzyme, thus forming ADP.
  2. Dehydration- In the ninth step of Glycolysis, each of two molecules of  2-Phosphoglycerate are converted to Phosphoenol Pyruvate, by Enolase enzyme, releasing two H₂O molecules.
  3. Formation of Pyruvate- In the last or tenth step of Glycolysis, each of two molecules of Phosphoenol Pyruvate are converted to Pyrutave using an ATP by the enzyme Pyruvate Kinase.
  4. Oxidation Of Pyruvate to Acetyl-CoA- Before the Kreb's Cycle starts, the Pyruvate molecule obtained from the Glycolysis undergoes oxidative decarboxylation producing Acetyl-CoA and release of CO₂ and NADH.
4 0
4 years ago
Other questions:
  • Which is a non-Mendelian trait?​
    15·2 answers
  • Need help fast, please and thank you ​
    12·1 answer
  • It is best to formulate a hypothesis and collect data BEFORE publishing a theory.
    6·2 answers
  • Phosphorus is never found in the atmosphere?
    9·2 answers
  • Which statements describe long-term environmental changes? Check all that apply. They occur in minutes or within hundreds of yea
    9·2 answers
  • What type of behavior is a bird song, learned or innate?
    12·1 answer
  • Which of the following is not a characteristic of all living things
    11·2 answers
  • Wolves, which are top predators, were eliminated from Yellowstone National Park in the 1930s. In 1995, wolves were reintroduced
    8·1 answer
  • A carrier of a genetic disorder who does NOT show symptoms but who CAN pass on a disease to his or her offspring would have whic
    5·1 answer
  • Explain the flow of blood from a leg muscle to the heart and lungs and back to the muscle again listing each organ the blood tra
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!