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
BabaBlast [244]
1 year ago
7

The piece of metal is magnetic and is lustrous. Is this statement an example of physical or chemical properties being describe a

bout the metal? what is the answer
Biology
1 answer:
Ad libitum [116K]1 year ago
6 0

Answer:

The correct answers are options C, that is, silver tarnishes and becomes black when exposed to oxygen, and option E, that is, diesel fuel burns when it is heated.  

Explanation:

Chemical changes refer to the modifications in which the chemistry at molecular level is modified as the initial substance gets transformed into a new and different final substance. This change occurs with the dissociation of old bond and production of new bonds respectively.  

I hope this helps. :).

You might be interested in
Describe how disagreement exists in science
12345 [234]

Answer:

Explanation:

when people have different opioions on what they believe in.

3 0
3 years ago
After changing a dressing that was used to cover a draining wound on a client with vancomycin-resistant enterococci (vre), the n
Mamont248 [21]
<span>the nurse should dispose the dressing in a red bag labeled as hazardous material. Remember that any material coming from an infected patient is considered as infectious. it is potentially infectious to the human body, especially to those who are immunocompromised. Vancomycin resistant enterococci is a bacteria which is resistant to the antibiotic Vancomycin. it means this type of antibiotic is not working to kill the bacteria, moreover this type of bacteria is highly infectious that's why precaution is observed. </span>
3 0
2 years ago
Plz help me with this answer
777dan777 [17]
I will help you get the answer
4 0
3 years ago
Read 2 more answers
7) Calculate ∆G^0' for the following reaction: glucose + 6O2 → 6 CO2 + 6 H2O. Is this reaction exergonic or endergonic?
san4es73 [151]

The reaction is endergonic.

<h2>Procedure - Determination of the Gibbs reaction type</h2>

<h3>Thermochemical model</h3>

First, we need to determine the Gibbs free energy function (\Delta G_{o}), in kilojoules, of the entire reaction by this formula:

\Delta G_{o} = \Sigma\limits_{j=1}^{m} n_{j}\cdot g_{o, j} - \Sigma\limits_{i=1}^{p}n_{i}\cdot g_{o,i} (1)

Where:

  • n_{i} - Number of kilomoles of the i-th reactive, in kilomoles.
  • n_{j} - Number of kilomoles of the j-th product, in kilomoles.
  • g_{o,i} - Specific Gibbs free energy function of the i-th reactive, in kilojoules per kilomole.
  • g_{o,j} - Specific Gibbs free energy function of the j-th reactive, in kilojoules per kilomole.

<h3>Data from thermochemical tables</h3>

From thermochemical tables we have the following information:

Reactives

g_{glu} = -2871596\,\frac{kJ}{kmol}, g_{O_{2}} = 0\,\frac{kJ}{kmol}

n_{glu} = 1\,kmol, n_{O_{2}} = 6\,kmol

Products

g_{CO_{2}} = -137150\,\frac{kJ}{kmol}, g_{H_{2}O} = -237180\,\frac{kJ}{kmol}

n_{CO_{2}} = 6\,kmol, n_{H_{2}O} = 6\,kmol

<h3>Determination of the Gibbs free energy function</h3>

Now we proceed to determine the Gibbs free energy function and later determine the nature of the <em>thermochemical</em> reaction:

\Delta G_{o} = (6\,kmol)\cdot \left(-137150\,\frac{kJ}{kmol} \right) + (6\,kmol)\cdot \left(-237180\,\frac{kJ}{kmol} \right)-(1\,kmol)\cdot \left(-2871596\,\frac{kJ}{kmol} \right) - (6\,kmol)\cdot \left(0\,\frac{kJ}{kmol} \right)

\Delta G_{o} = 625616\,kJ

The Gibbs free energy function of the <em>entire</em> reaction is 625616 kilojoules.

<h3>Analysis of the result</h3>

The Gibbs free energy function has a <em>positive</em> sign, which means that this reaction is endergonic.

To learn more on Gibbs free energy, we kindly invite to check this verified question: brainly.com/question/9552459

6 0
2 years ago
Organisims that are photosynthetic are classified as
artcher [175]

Answer:

Photosynthetic Organisms are  classified as Photo-autotrophs.

Explanation:

Autotrophs are those organisms that can produce their own food and also called primary producers. While photo-autotrophs are those that use the process of photosynthesis to produce food. The common examples of photo-autotrophs are plants and Cyanobacteria.

Photosynthesis is a procedure in which an organism produces energy in the form of food using sunlight, water, carbon dioxide and Chlorophyll. The main products of photosynthesis are glucose and Oxygen.

5 0
3 years ago
Other questions:
  • A cat is discovered with a very short tail. What would prove that this change was caused by a genetic mutation and not because t
    6·2 answers
  • Is this statement true or false? Road maps show the elevation of a part of the Earth's surface .
    11·2 answers
  • Solids can be classified into three bonding patterns. Which of the following is not one of them? a) covalent b) ionic c) metalli
    5·1 answer
  • Predict the chemical formula of butyne, having one carbon-carbon triple bond.<br><br>C4H8
    6·1 answer
  • What causes the ocean waves that surface use for their sport ?
    13·1 answer
  • A recessive allele __________.
    6·1 answer
  • Identify the number of the organelle in the diagram that is called powerhouse of cell
    13·1 answer
  • How many years does a snake live and how many times does it change its skin without pictures please and without links​
    10·2 answers
  • Why are the male testes located in the scrotum, outside the abdominopelvic cavity?.
    11·1 answer
  • Morning! I just need some help with this question! Ex. If it is A and it is mitosis then you would put A-Mitosis
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!