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
solmaris [256]
3 years ago
6

Hola tengo un examen, no es necesario que me den todas las respuestas pero me seria de gran ayuda si me respondieran las que sep

an
Calcula la cantidad de gramos que hay en 12,5 mol de NaCl (Masa Na: 23,0; Cl: 35,5)
Opciones:
737,5 g de NaC
737,5 gr de NaC
738,5 g de NaC

Determinar la cantidad de moles y átomos de Calcio que hay en 120 g de Ca. (Masas Ca:40)
opciones:
3 mol de Ca y 1,8066 x 10^24
3 mol de Ca y 1,8065 x 10^24
3 mol de Ca y 1,8067 x 10^24

Para el ácido sulfúrico H2SO4 (Masas H:1,0 S: 32,01; O: 16,0). ¿Cuál es su masa molar?
opciones:
98 Kg/mol
98 gr/mol
98 g/mol

Cuántos átomos de Magnesio (Mg) hay 52 g de este (Masa Mg: 24,31)?
opciones:
12.89 x 10^23 (4 puntos)
12.88 x 10^23 (4 puntos)
12.88 x 10^24 (4 puntos)

Sabrías decir el número de moles de átomos de carbono en 513 g de C12H22O11 (Masa molar de C12H22O11: 342 g)
17 mol de átomo de C.
16 mol de átomo de C.
18 mol de átomo de C.

Ncesito ayuda no entiendo :( de verdad estaria agradecido si me ayudan
Biology
1 answer:
Verdich [7]3 years ago
6 0
Answer//
Answer//
Answer//
Passed
You might be interested in
what is it called when the lead male and female are given preferential treatment to resources such as food and potential mates?​
lakkis [162]

Answer:

Dominance Hierarchy

Explanation:

Dominance hierarchy is when the lead male and female are given preferential treatment to resources such as food and potential mates.

Dominance hierarchy forms as a way for animals to coexist in an environment where threats are constant and resources like food, water, mates, and shelter are limited. As a group, members in the dominance hierarchy have access to more resources than they could obtain as individuals and can better defend their territory from threats.

I hope this helps

4 0
3 years ago
Maria lost her job because the economy is shrinking. This is an example of
a_sh-v [17]
It is an example of Cyclical unemployment. hope i helped!
6 0
3 years ago
Read 2 more answers
Based on the article "Will the real atomic model please
Arlecino [84]
The one major change that occurred was the placement and organization of the electron. Rutherford's model identified that the electrons were at a distance from the nucleus, Bohr's model identified that the electrons occurred at levels that related to their available energy, and the modern atomic model shows that electrons are located in a predicted area but cannot be identified in a specific point.
3 0
3 years ago
Read 2 more answers
Unionid mussels are native to the Hudson River in New York State. In the early 1990s, zebra mussels were introduced into the Hud
tekilochka [14]
They decrease because the zebra mussel were taking their resources. Leaving them nothing to eat.
8 0
3 years ago
Read 2 more answers
To my esteemed Biology colleagues: 10/15/19 I am National Park Ranger, Imani. I am writing you as my park is in desperate need o
Zanzabum

Answer:

See explanation below.

Explanation:

1. Explain the difference in the roles of producers, consumers, and decomposers in the Everglades.

In the Everglades, producers would be all <u>species of organisms that are autotrophs such as different species of plants</u>. Consumers are categorized into three: primary, secondary and terciary consumers. <em><u>Primary consumers</u></em><u> feed on plants (e.g. insects), </u><em><u>secondary consumers</u></em><u> eat the primary consumers (e.g. mice or rats), while </u><em><u>tertiary consumers</u></em><u> are higher predators that eat the secondary consumers (e.g. racoons)</u>. Finally, decomposers are bacteria, archaeans, fungi, or worms that live in soil which decompose organic matter.

2. Based on your knowledge of how to classify living organisms, in what domain and kingdom do the producers, consumers, and decomposers belong?

In Biology, the three domains are Archaea, Bacteria, and Eukarya; while there are six kingdoms: Archaebacteria, Eubacteria (true bacteria), Protista, Fungi, Plantae, and Animalia.

  • Producers, that is plants, belong to the Domain Eukarya and the Kingdom Plantae.
  • Primary, secondary, and tertiary consumers also belong to the Domain Eukarya and to the Kingdom Animalia as they are all animals and eukaryotes.
  • Decomposers are classified into the three domains: Archaea, Bacteria, and Eukarya. Bacteria belong to the domain Bacteria, archaeans belong to the domain Archaea, and worms and fungi belong to the domain Eukarya. On the other hand, decomposers are classified into Archaebacteria, Eubacteria, Protista (oomycetes), Fungi, and Animalia (worms).

3. How did energy travel in the Everglades BEFORE the alligators were removed?

Aquatic plants (producers) <-- bass <-- bluegill <-- gar <-- alligator

Aquatic plants (producers) <-- zooplankton <-- bass/bluegill <-- wood stork <-- alligator

Plants (producers) <-- cattle <-- alligator

Plants (producers) <-- insects <-- rats <-- racoons <-- alligator

4. How did removing the alligators from the food web change how energy flowed in the Everglades?

Once the alligators were removed from the food web, the populations that were once in decline began to recover because of the lack of predators. Consequently, the lack of alligators led to the uncontrollable growth of racoons, wood stork, and gar, which could also cause an alteration as they consume ecologically and economically important fish species such as the bass and bluegill.

5. How did the problem begin, and what action(s) should Ranger Imani take to solve this issue?

The problem began when the populations of alligator, an apex predator that sits at the top of the food chain, grew at an accelerated pace. This led to the uncontrolled predation of other organisms that are also fundamental to maintain an ecological balance. Therefore, Ranger Imani decided to humanely euthanize the alligators, which were preying upon them. This led to a huge increase in wood stork, gar, and racoon populations.

Alligators should not be completely removed because they help to maintain an ecological balance. Instead, Ranger Imani should work on controlling populations by implementing Wildlife Population Management strategies, such as sustainable fishing, to prevent a certain species population from reaching a high number of individuals in order to keep a healthy ecosystem where all populations are stable because removing all apex predators is not the appropriate strategy as it significantly alters the ecosystem.

3 0
4 years ago
Other questions:
  • What is a consequence of air pollution caused by greenhouse gases emitted by cars?
    10·2 answers
  • In order for a genetic mutation in a species to result in the formation of a new species, what must occur?
    11·1 answer
  • Analogies for Binary fission and conjunction for bacteria growth and reproduction.
    14·1 answer
  • In photosynthesis, water undergoes ______ while carbon dioxide undergoes ________
    5·1 answer
  • Food chains and webs not only describe the order organisms are eaten, but they also describe the _____.
    10·1 answer
  • About 88 percent of geologic time is represented by the time span called the ________ era. paleozoic phanerozoic mesozoic precam
    6·1 answer
  • A scientist wanted to investigate whether light is required for the germination
    13·1 answer
  • I need help please...
    14·1 answer
  • FUN FACT OF THE DAY (day:5)
    5·2 answers
  • What is the main advantage of chronometric dating over relative dating?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!