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
Vinil7 [7]
3 years ago
12

A rabbit takes in energy by consuming pine needles, clover, leafy weeds, etc. the rabbits use the majority of this energy to car

ry out its life activities if a wolf eats the rabbits what percentage of energy is lost between the topic levels? A. 10% B. 90% C. 20% D. 80%
Chemistry
1 answer:
alekssr [168]3 years ago
4 0
90% of energy is lost. only 10% is left.

therefore the answer is B. 90%
You might be interested in
How many moles of magnesium is 3.01 x 10^22 atoms of magnesium?
Step2247 [10]
3,01 x 10.000.000.000.000.000.000.000=
=30.100.000.000.000.000.000.000
4 0
3 years ago
Ion compound <br> N3- CO2+
alexandr402 [8]
What’s the question ??????????????????? Explain please ?
8 0
3 years ago
What is the value for AG at 100 Kif AH = 27 kJ/mol and AS = 0.09 kJ/(mol-K)?
Elina [12.6K]

Answer:

ΔG =   18KJ/mol

Explanation:

Given data:

ΔS = 0.09 Kj/mol.K

ΔH = 27 KJ/mol

Temperature  = 100 K

ΔG = ?

Solution:

Formula:

ΔG = ΔH - TΔS

ΔH = enthalpy

ΔS = entropy

by putting values,

ΔG =  27 KJ/mol - 100K(0.09 Kj/mol.K)

ΔG =  27 KJ/mol - 9 KJ/mol

ΔG =   18KJ/mol

7 0
2 years ago
Why would fluorine, chlorine, and bromine be placed in the same group (the halogens) in the periodic table of elements? (1 point
inna [77]

D. They share chemical properties.

7 0
3 years ago
Write a balanced nuclear equation for the formation of 28 Si 14 from beta-minus emission.
Fantom [35]

Answer:

Phosphorus-28 undergoes beta-minus decay to produce

  • an electron,
  • a Silicon-28 nuclei, and
  • an electron antineutrino.

\rm ^{28}_{13} Al \to ^{28}_{14} Si + ^{\phantom{-}0}_{-1}e + \bar{\mathnormal{v}}_{\rm e}

Explanation:

In simple words, when a nucleus undergoes beta-minus decay, a neutron is converted to a proton. An electron and an electron antineutrino will be released.

\rm ^{1}_{0}n^{0} \to ^{1}_{1}p^{+} + ^{\phantom{-}0}_{-1}e^{-} + \bar{\mathnormal{v}}_{\rm e}.

One way to tell whether a neutron is converted to a proton, but not vice versa, is to check the sum charges on the two sides of this equation.

  • Left-hand side: 0. Neutron is neutral.
  • Right-hand side: 1 + (-1) = 0. Each proton carries a charge of +1. Each electron (beta-minus particle) carries a charge of -1. Antineutrinos are neutral.

The charges on the two sides of this equation is the same. Hence this nuclear equation is possible (but not necessarily correct; however, if the proton and the neutron are in the wrong place the charge won't even be the same.)

Since the mass number of a proton and a neutron are both 1, the overall mass number of the atom will stay the same.

The atomic number is the number of protons in each atom. That number determines the symbol and the chemical properties of the atom. When one neutron in an atom is converted to a proton, the atomic number of the atom will increase by 1.

The atomic number of the daughter nucleus, silicon, is 14. It takes a parent nucleus with atomic number 14 - 1 = 13 to produce a silicon atom. Refer to a modern periodic table. Atomic number 13 corresponds to the element aluminum.

Also, the mass number of the daughter nucleus is 28. Since the mass number would stay the same in a beta decay, the mass number of the parent nucleus would also be 28. In other words, it takes an aluminum-28 atom to undergo beta-decay to produce a silicon-28 atom.

Complete the other details (electron and electron antineutrino) to obtain the equation

\rm ^{28}_{13} Al \to ^{28}_{14} Si + ^{\phantom{-}0}_{-1}e + \bar{\mathnormal{v}}_{\rm e}.

6 0
3 years ago
Other questions:
  • The average American student is in class 330 minutes/day. How many hours/day is this?
    13·1 answer
  • Which of the following pairs of reactants is not correctly listed with its product solution? A. Weak base-strong acid reactants—
    7·2 answers
  • Which process has been largely responsible for increasing the amount of co2 in the last 200 years? increasing cattle ranching wo
    12·1 answer
  • Match the correct term with its definition. The color of the powder of a mineral. Answer 1 The sinking of one lithospheric plate
    5·1 answer
  • Which statements about cirrus clouds are true? Choose all answers that are correct. A. Cirrus clouds form high in the sky. B. Ci
    6·1 answer
  • Aluminium is produced by electrolysis of a molten mixture.
    5·1 answer
  • Genetic material (_____) is passed from cell to cell.
    13·1 answer
  • Carrots and beets are roots. They are sweet due to sugar. How is this an adaptation for the plant's survival?
    10·2 answers
  • Difference between desirable changes and undesirable changes​
    8·1 answer
  • . Which of the following statements about noble gases is NOT true?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!