Elisa was walking through her neighborhood one afternoon and came upon a cat that was stuck under a fallen tree branch. The branch was large and heavy, but Elisa was able to lift it and free the cat.
Which gland helped Elisa to lift the branch?
thymus
pancreas
ovary
adrenal
Answers
Based on this information, the gland that helped Elisa to lift the branch is the adrenal gland.
What is the adrenal gland?They are two small organs responsible for secreting hormones such as cortisol, adrenaline or noradrenaline into the bloodstream.
These hormones have to do with how the body responds to stress to help the body get a boost of energy to better handle an emergency situation, and some are vital for survival.
Therefore, we can conclude that based on this information, the gland that helped Elisa to lift the branch is the adrenal gland.
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Answer:
D- Adrenal
Explanation:
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Olivia is a veterinary parasitologist who is studying a recent outbreak of giardia among beavers in a Colorado river. Since this is the first time she has seen beavers with this type of protozoa, Olivia is attempting to trace where they contracted it. After extensive testing, it is found that human sewage was leaking from a treatment plant nearby. This sewage contained the giardia protozoa, and the beavers picked it up in the nearby waters. Olivia now writes a research paper concerning this case in order to reclassify giardia. After her investigations, into what category is Olivia MOST likely hoping to place these protozoa in?
Group of answer choices
zoonoses
anthroponosis
ectoparasites
helminths
Although there is no denying that something killed a third of the population of Ancient Athens, there has been debate as to cause for many years. A historian who lived through it called it The Plague and so for many years, it was accepted to be Yersinia pestis, the same as the bacteria responsible for the Black Death. Recently, though, scientists have become convinced that the outbreak was actually due to typhoid. Given that this opinion of an event that occurred hundreds of years ago has only recently changed, what conclusion can be reached?
Group of answer choices
Historians understand the language of written records more clearly and have discovered that the symptoms match typhoid.
Scientists have been able to examine samples of human teeth found in the Athens area and isolated typhoid in the pulp.
A recent resurgence of typhoid in the Athens area leads scientists to believe that the climate is perfect for typhoid but not for Yersinia pestis.
There is no real reason for the change except that some scientists believe the plague is just a catch all.
As the Black Death spread up the Italian peninsula, into France, Germany, and further north, people alive in the 1300s felt that there was little they could do to protect themselves. What option might have been open to England and Scotland that the rest of Europe could not take advantage of?
England and Scotland are on an island so they could have closed their shores to ships.
England and Scotland had access to scientists who should have found a medicine.
England and Scotland have cold, wet environments that should have killed the bacteria.
England and Scotland had access to wool that could be used to create masks.
Answers
Answer:
Olivia-anthroponosis
Although-Ringworm is not life-threatening, whereas most others are.
Black Death-It was caused by bacteria instead of a virus.
Explanation:
HURRYY!!! WORTH 25pts. How many moles of a gas will be needed to fill a 42 liter container at 370 K and 9.16 atmospheres?
PV=nRT
R = 0.0821
Answers
Answer:
12.665 mols
Explanation:
You can just plug into the equation finding n, which is moles. The equation would be n = PV/RT. atm is 9.16, Volume is 42, 0.08206 or 0.0821 in this case is the constant, and T is the temperature which is 370 Kelvin.
In the excerpt below, Antony is very angry. Which rhetorical strategy is he using? Logis ethos pathos
Answers
What is cholesterol and how does it affect our body?
Answers
Answer:
Cholesterol is a waxy substance found in your blood. Your body needs cholesterol to build healthy cells, but high levels of cholesterol can increase your risk of heart disease. With high cholesterol, you can develop fatty deposits in your blood vessels.
Explanation:
Answer:
Cholesterol is a waxy substance found in your blood. It can affect our bodies in many ways. If you have high levels of cholesterol it can increase your risk of heart disease. Your body needs it to help build healthy cells.
Explanation:
Hope this helps:)...if not then sorry for wasting your time and may God bless you:)
The air pressure for a basketball is 0.578 atm. What is this
pressure in Pa?
Answers
Answer:
586000.
Explanation:
Answer: 58600 atm
Explanation:
Calculate the mass of nitric acid 63 gmole dissolved in 0.48 kg of water with the molarity of 1.2m
Answers
See picture for detailed solution
Determine the ratio of moles of iron actually used to moles of new product actually formed. Does this molar ratio agree with the ratio from the balanced chemical equation?
equation 1.50g Cu 1 mole cu ÷ 63.5g Cu Fe ÷1 Cu 55.8gFe ÷ 1 mole = 1.32g Fe
Answers
The mole ratio of iron to copper is 1 : 1, thus, 1.31 g of iron is required to produce 1.5 g of copper.
What is the equation of the reaction between iron and copper(ii) sulfate?The reaction between iron and copper(ii) sulfate is a redox displacement reactions in which copper is displaced from its salt by iron.
The equation of the reaction is given below:
[tex]CuSO_4 + Fe \rightarrow FeSO_4 + Cu[/tex]
The mole ratio of both reactants and product is 1 : 1
moles = mass/molar massmolar mass of copper sulfate = 160 g
molar mass of Cu = 64
molar mass of iron = 56 g
mole ratio of iron to copper = 1 : 1moles of Cu in 1.5 g = 1.5/64 = 0.00234
mass of iron required = 0.00234 × 56 = 1.31 g of iron
Therefore, from the mole ratio of iron to copper, 1.31 g of iron is required to produce 1.5 g of copper.
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. Why is it important to know the conditions under which an aqueous redox reaction takes place in order to balance the ionic equation for the reaction
Answers
Answer:
Just like with any other reaction, balancing the equation for the reaction is important so that people can know all the inputs and outputs, and know how much of each input (reactant) is needed to produce a certain amount of product.
A sample of a compound is found to contain 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen. What is the empirical formula of this compound
Answers
Answer:
The empirical formula is CH2O, and the molecular formula is some multiple of this
Explanation:
In 100 g of the unknown, there are 40.0⋅g12.011⋅g⋅mol−1 C; 6.7⋅g1.00794⋅g⋅mol−1 H; and 53.5⋅g16.00⋅g⋅mol−1 O.
We divide thru to get, C:H:O = 3.33:6.65:3.34. When we divide each elemental ratio by the LOWEST number, we get an empirical formula of CH2O, i.e. near enough to WHOLE numbers. Now the molecular formula is always a multiple of the empirical formula; i.e. (EF)n=MF.So 60.0⋅g⋅mol−1=n×(12.011+2×1.00794+16.00)g⋅mol−1.Clearly n=2, and the molecular formula is 2×(CH2O) = CxHyOz.
2.3 moles of Helium gas are at a pressure of 1.70 atm, and the temperature is 41°C. What is the volume of the gas?
Answers
Answer:
35 L
Explanation:
To solve this problem we use the Ideal Gas Law equation: PV=nRT
We only have to convert one unit, which is celsius to Kilometers.
P=1.70 atm
V=X
n=2.3
R=.08206
T=41+273=314K
1.70(x)=2.3(.08206)(314)
1.70x=59.26
x=34.6L
Using 2 sig figs = 35L
Why are pure or very concentrated solutions of hydrogen peroxide considered to be dangerous?.
Answers
Answer:
Explanation:
They react violently and can be used to make bombs
Pure or very concentrated solutions of hydrogen peroxide are considered to be dangerous because they can be highly reactive and can cause severe chemical burns.
A solution is a homogeneous mixture of two or more substances, where the substances are uniformly distributed throughout the mixture.
Hydrogen peroxide is a powerful oxidizer, which means that it can react with many other substances, including organic materials such as skin and clothing.
When hydrogen peroxide comes into contact with organic materials, it can rapidly decompose, releasing large amounts of oxygen gas and heat. This can result in a fire or explosion if the concentration is high enough. In addition to being a fire and explosion hazard, hydrogen peroxide can also be harmful if ingested or inhaled.In conclusion, pure or very concentrated solutions of hydrogen peroxide are considered to be dangerous because of their high reactivity and potential to cause chemical burns, fires, and explosions.
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What are the chemical names of these ionic compounds?
Select the correct answer from each drop-down menu.
Answers
How many liters in .250 ml?
Answers
Answer:
0.00025
Explanation:
Divide the volume by 1000
The National Wildlife Refuge supports _______ wildlife refuges. a. 150 b. 37 c. 550 d. 227
Answers
Answer:
C. 550
Explanation:
HGD
Answer:
C
Explanation:
Trust
What was the actual number of moles of water per formula unit cocl2?.
Answers
Cobalt chloride exists in hydrated form. Generally it prefer to form its hexahydrated form but the actual number of water molecules per formula unit is 2. Thus it forms CoCl₂.2H₂O.
What is cobalt chloride?Cobalt chloride is a metallic compound formed from the transition metal cobalt and two chlorine atoms. In fact it is a coordination complex attached with water molecules.
The property of a compound to be easily dehydrated and dry is called hygroscopic whereas the property by which a compound easily absorbs moisture and forms its hydrated form is called deliquescent.
Cobalt chloride is deliquescent in nature and absorbs water molecules forming its dihydrated, tetra hydrated and hexahydrated forms. The most common hydrate of cobalt chloride is dihydrated one and thus we can say that the number of water molecules per formula unit of CoCl₂ is 2.
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Calculate the partial pressure of oxygen given the total barometric pressure of 515 mmHg. Round to the nearest hundredth.
Answers
The partial pressure of oxygen given the total barometric pressure is : 108.15 mmHg
Given data :
Total barometric pressure = 515 mmHg
Assuming oxygen percentage = 21%
Barometric pressure dry at 37°C
Determine the partial pressure of oxygenApplying the relation below
Partial pressure = oxygen percentage * Barometric pressure
= 21% * 515 mmHg
= 108.15 mmHg
Hence we can conclude that the partial pressure of oxygen is 108.15 mmHg.
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The main purpose of cell division is
A.
to absorb nutrients.
B.
to remove cellular waste.
C.
to produce cellular energy.
D.
to produce more cells.
Answers
I did this last year
The fuel used to power the booster rockets on space shuttles is a mixture of aluminum metal and ammonium perchlorate. the following balanced equation represents the reaction.. 3al 3nh4clo4 → al2o3 alcl3 3no 6h2o how many moles of water are produced from 373 mol al?
Answers
The moles of water that are produced from 373 moles of ammonia present in any chemical reaction is 746 moles.
What is the stoichiometry?Stoichiometry of the reaction gives idea about the amount of entities present in any chemical reaction before and after the reaction.
Given chemical reaction is:
3Al + 3NH₄ClO₄ → Al₂O₃ + AlCl₃ + 3NO + 6H₂O
From the stoichiometry of the reaction it is clear that:
3 moles of Al = produces 6 moles of H₂O
373 moles of Al = produces 6/3×373 = 746 moles of H₂O
Hence required moles of water is 746 moles.
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A gas has a volume of 450.0 mL. If the temperature is held constant, what volume would the gas occupy if the pressure were a. doubled
Answers
Answer:
225.0mL
Explanation:
Volume and Pressure are inversely related. So if the pressure is doubled the volume will be half of its original volume.
Some greenhouse gases, such as fluorocarbons (CFCs, HFCs, PFCs, etc.), are human-made. Others, such as water, methane, and carbon dioxide, are naturally produced. Which type of greenhouse gas (human-made or natural) is more difficult to control and eliminate? Which types are easier? In three to five sentences, provide evidence for your argument.
Answers
Carbondixoide gas is the type of greenhouse gas which is more difficult to control and eliminate.
Which gas is difficult to remove and reduce?Carbon dioxide is the greenhouse gas that is emitted through human activities which can be controlled by reducing human activities which is impossible for us because large number of products are produced from which carbondioxide gas is released.
So we can conclude that carbondixoide gas is the type of greenhouse gas which is more difficult to control and eliminate.
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Relative to solids and liquids, how does air rank as a conductor of sound?.
Answers
Use the picture below to answer the question. Comparing Wave A (blue) to Wave B (red), Wave B has a
Answers
Answer: B longer wave
Explanation:
because
What is the pH of the solution if the molarity is 0.065M[H+]
Answers
The pH of a solution that has a hydrogen ion concentration [H+] of molarity 0.065M is 1.19.
How to calculate pH?The pH of a solution refers to the power of hydrogen in the solution i.e. the degree of acidity or alkalinity of the solution.
The pH of a solution with known concentration can be calculated using the following formula:
pH = - log [H+]
According to this question, a solution has a molarity of 0.065M. The pH is as follows:
pH = - log [0.065]
pH = 1.19
Therefore, the pH of a solution that has a hydrogen ion concentration [H+] of molarity 0.065M is 1.19.
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What type of change does electrolysis cause?
Reaction change
Physical change
Temperature change
Chemical change
Answers
Chemical Change
Answer:
Chemical change
Of a 4 M solution of HCl, 1 L is diluted to 2M. What is the volume of the diluted solution?
A. 2L
B. 0. 5L
C. 8L
D. 4L
Answers
Answer:
D because i say so and i am just here to get awnsers
Photochemical reaction are?
Answers
Any reaction that absorbs 150 kcal of energy can be classified as.
Answers
Answer:
The Answer should be Endothermic reaction
Explanation:
Reactions in which energy is absorbed are called Endothermic reactions.
an effervescent tablet is added to a test tube of water, producing a solution that fizzes and releases gas bubbles. The total mass of the substances and the test tube were recorded before and after the tablet was added to the test tube of water.
Answers
Answer:
The mass remains same after and before the reaction
Explanation:
This is because of law of conservation of mass
Which states that
In a chemical reaction mass is neither created nor destroyed,it remains conserved .Estimate how long it would take you to count
a dozen eggs. Now estimate how long it would take you to count the number of
atoms in a single egg. If you knew how many atoms were in a single egg, how
would you use that information to estimate the number of atoms in a dozen eggs?
Answers
seeing that we already know the number of a dozen eggs is 12, after finding out the numbers of atoms in one egg, we multiply by 12.
What is a Atom?Simply put, an Atom is the smallest unit of life, it should be noted that everything arround us is composed of an atom.
In summary, atoms are very small, they can only be seen using powerful microscope.
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what are the dangerous chemicals in the world of humans.
Answers
i believe this would be the answer
Arsenic trioxide.
Chlorine.
Hydrogen cyanide.
Nitrous oxide.
Phosgene.
Potassium cyanide (analytical reagent and purified)
Sodium arsenate (analytical reagent)
Sodium cyanide (analytical reagent)
Hope this helps! :)
Answer:
1) Sarin gas
2) Potassium cyanide
3) Botulinum toxin
4) Batrachotoxin
5) Dimethyl Cadmium
6) Fluoroantimonic Acid
7) Arsine
8) Ricin
9) Strychnine
10) Nicotine
Explanation: That's it mate.
hope it helps