Consider the entropy change in the following chemical or physical processes:
1.2 Na(s) + Cl₂(g) → 2 NaCl(s)
2. N₂(g) + 3 H₂(g) → 2 NH3(g)
3. H₂O(s)→ H₂O(l)
4. C10H22(1)→ C10H22(S)
5.2 Mg(s) + O₂(g) → 2 MgO(s)
In which of these processes is entropy increased?

Answer:

A

Explanation:

Answer:

D is the correct answer. the seasonal movement of organisms between locations

Answer:

The answer is C.2,1,2

Explanation:

The reason why the answer is C.2,1,2 is because if you put a 2 Infront of the first calcium it will be balanced with the calcium in the product side and if you put one in front of the oxygen that wiil be two and it will also be balanced with the oxygen on the product side and seeing that a 2 the coefficient is already on the product side the equation is already balanced

Answer:

C. 2,1,2

Explanation:

Ca(s) + O₂ (g) →2CaO(s)

on the reactants side:

1 Ca

2 O (because the subscript 2 counts as there being 2 O molecules. if you put a 2 in front of the O₂  that would be 2x2=4)

On the product side:

2Ca

2O

you would just need to add a 2 to the Ca on the reactants side to balance the equation.

I hope this helps!

Answer:
a. 1 x 10^8

Explanation:

100 MHz = 100,000,000 Hz = 10^8 Hz

Given,

Molar heat capacity of gold is 25.41 J/(mol • °C)

Heat capacity of water is: 4.18 J/g. °C)

use the capacities to calculate the resultant temperature of the system using the mass of 18 grams of gold alongside 18 grams of water.

Hope This Helped!

Moles are the product of the molar concentration and the volume of the solution. The moles of Ferric chloride is 0.118 moles.

Moles are the smallest unit of the measurement of atoms and molecules. It is calculated by the molar concentration and the volume of the solution.

Given,

Molar concentration of ferric chloride = 0.762 M

Volume of solution = 0.155 L

Moles are calculated as:

[tex]\begin{aligned} \rm Moles &= \rm Molarity \times Volume (L) \\\\&= 0.762 \times 0.155\\\\&= 0.118\;\rm mol\end{aligned}[/tex]

Therefore, 0.118 moles of ferric chloride are present in the sample.

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Answer:

Moon rocks contain few volatile substances (e.g. water), which implies extra baking of the lunar surface relative to that of Earth. The relative abundance of oxygen isotopes on Earth and on the Moon are identical, which suggests that the Earth and Moon formed at the same distance from the Sun.

Explanation:

Answer:

They DON"T have the same mass !

Explanation:

Answer:

Glucose. Also provides heat and energy in man

Explanation:

I hope this right if ain't I'm sorry

Answer:

The volume will be less.

Explanation:

The volume of urine someone produces varies based on their liquid intake. The more liquid you intake, the more you must urinate (not a direct correlation, but basically).

hold the syringe downward,shake vigorously for sometime,and expel the bubbles through the needle using the syringe plunger. hold the syringe upright, provide a firm tap or flick to the barrel

Based on the heat absorbed by the calorimeter, the heat of reaction, ΔHrxn is 333.5 kJ/mol

The heat evolved or given out by the sample is the equal to the amount of heat absorbed by the calorimeter.

The heat absorbed by calorimeter is given as:

Heat = 13.3 × (56.0 - 32.0)

Heat evolved = 319.2 kJ

Moles of sample reacted = 53.8/56.23 = 0.957

ΔHrxn = 319.2 kJ/0.957 moles = 333.5 kJ/mol

Therefore, the heat of reaction, ΔHrxn is 333.5 kJ/mol.

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Answer:

Diseases of Poultry
a. ESCHERICHIA COLI INFECTIONS.
b. SALMONELLOSES.
c. PARATYPHOID INFECTIONS.
d. FOWL CHOLERA.
e. RIEMERELLA ANATIPESTIFER INFECTIONS.MYCOPLASMA.
f. NECROTIC ENTERITIS.
g. CHOLANGIOHEPATITIS IN BROILER CHICKENS.

Explanation:

Answer:

◎Bacterial diseases

◎Mycoplasmosis (CRD, Air sac, Sinusitis)

◎Fowl Cholera

◎Necrotic Enteritis

◎Ulcerative Enteritis (Quail disease)

◎Pullorum Disease

◎Fowl

◎Botulism

◎Infectious Coryza

◎Omphalitis

◎Erysipelas

◎Parasitic diseases (internal)

◎Parasitic diseases (external)

◎Infectious Bronchitis

◎Viral diseases

◎Newcastle Disease

◎Quail Bronchitis

◎Lymphoid Leukosis

◎Marek's Disease (Visceral Leukosis)

◎Infectious Bursal Disease (Gumboro)

Explanation:

:)

Answer:

ugh this wont save anyway i think i'm just checking if ill save

Explanation:

if i does C both

hope this helps

The correct selection for 4-octyne structure is A. Hence option A is correct.

Atom is smallest entity of a body. Body is made up of atoms. it is basic building block of a body. An atom consist of electrons, protons and neutrons as sub atomic particle. whole mass of the atom is concentrated at the center of the atom which we call it as nucleus, nucleus consist of proton and neutron. Electron revolve around the nucleus at determined(fixed) orbit. Total number of protons in the atom decides the atomic number and the elements in the periodic table.

Molecule is made up of atoms, it is formed when two or more atoms bound together. The electrons in the outermost orbit are responsible for the molecule formation. Electrons are shared by the atoms in the entire molecule.

4-Octyne, also known as dipropylethyne, is a type of alkyne with a triple bond at its fourth carbon. its chemical formula is C₈H₁₄.

C₈H₁₄ are bounded like . CH₃CH₂CH₂-C ΞC-CH₂CH₂CH₃

Hence option A is correct.

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Answer:

It is used in medical research.

Explanation:

So its answer is trends in drug effectiveness

In the given question, epidemiological studies look into trends in statistics. The correct answer is option D.

Epidemiology is the study of how diseases spread and how to prevent them.

Epidemiologists use statistics to understand how diseases spread and how to prevent them from spreading further. They look at trends in:

Therefore, Option D. "Trends in statistics" is the correct answer.

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[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

The balanced chemical equation for the shown reaction is :

[tex]\qquad \tt \:CH_4 + 2 \: O_2 \rightarrow CO_2 + 2 \: H_2O[/tex]

Where, coefficient of

Answer:

See below

Explanation:

1 minute is   4 halflives    ( because  4 x 15 sec = 1 minute)

(1/2)^4 = 1/16

you will have 1/16 as many M&M as you started

Answer:

pH= 2.199971 is the correct answer of given statement

Answer:

D

Explanation:

Hi!

Let's say you have 2 different reactants, A and B, and 1 product, C.

2A + 4B -> 3C

Let's say that once we do the calculations, we find that A is the limiting reactant/reagent.

All of the A is used up in the reaction, leaving behind some excess B, and forming C.

Now that there is only B left behind, it has nothing to react with, so it cannot create any more product.

I hope this helps!

Answer:

A liquid does NOT have a definite shape but has a DEFINITE volume.

Explanation:

If you pour water in a shaped glass or container, it takes that shape of the object. But if you pour water on the table, it will run all aver the place.

Answer:

mass of sodium hydroxide is needed to react completely with 10.0 g of iron(III) chloride

Explanation:

Answer:

1436.2 calories   per mole H2O

Explanation:

one mole of water has mole weight of   2 * H   +   O =

2 * 1.008  + 15.999 = 18.015 gm

the heat of fusion for water (the heat required to turn ice to water )

   is  79.72 cal/gm

18.015 gm * 79.72 cal/gm = 1436.2 cal

The lack of a spinal column is the  distinguishing characteristic of invertebrates.

These are organisms which lack a backbone(vertebral column) while vertebrates on the other hand have it.

This is why option C was chosen as the most appropriate choice in this scenario.

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Answer:

Don't use tobacco or tobacco-containing products

Maintain a healthy diet

Protect yourself from the sun, make sure to use sunscreen

Go to the doctor regularly, for general checkups

Stay physically active

Explanation:

hope this helps :)

The dissociation of isocyanic acid in water produces its conjugate base, C N- since it will accept a proton to form isocyanic acid.

A conjugate base is a substance which is formed from the loss of the hydrogen ion of an acid and which will act as a base by accepting a proton.

The dissociation of Isocyanic acid in water is given below:

[tex]HC N + H_2O \rightleftharpoons C N^{-} + H_3O^{+}[/tex]

The conjugate base is C N- since it will accept a proton to form isocyanic acid.

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Answer: A

Explanation:

I took this test its A

Answer:

c

Explanation:

The current level of health, goals, and diet need to be taken into consideration while planning an exercise program.

Exercise programs should include some specific exercises to improve cardiovascular health, such as swimming, jogging, rowing, elliptical exercises, and biking.

To assess your current fitness level use or make an appointment with an exercise professional for a fitness assessment. Consulting an exercise professional when designing a fitness program can help you reduce injury and customize a program to your needs. The adult pre-exercise screening tool consists of exercise guidelines.

Consider your goals and think about likes and dislikes. Plan a logical progression of activity and build activity into a daily routine. If you begin to lose motivation then set new goals or try a new physical activity.

Give time for recovery after exercising and make sure to have an adequate healthy diet and assemble exercise clothing.

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Answer:

C

Explanation:

just took the test

Answer: Yes, we need greenhouse gases. Greenhouse gases are important because they sustain a healthy temperature on our planet. Greenhouse gases absorb heat from the sun and keep it in the atmosphere. The heat emitted by the Earth would pass outwards from its surface into space if greenhouse gases were not active. However, greenhouse gases aren’t just important. They can cause harmful consequences to our environment, too. Letting greenhouse gases into our air causes climate change and respiratory diseases from smog and air pollution.

Explanation:

Given what we know, we can confirm that the amount of heat energy that would be required in order to boil 5.05g of water is that of 11.4kJ of heat.

We arrive at this number by taking into account the energy needed to boil 1g of water to its vaporization point. This results in the use of 2260 J of heat energy. We then take this number and multiply it by the total grams of water being heated, in this case, 5.05g, which gives us our answer of 11.4 kJ of energy required.

Therefore, we can confirm that the amount of heat energy that would be required in order to boil 5.05g of water is that of 11.4kJ of heat.

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Answer:

A

Explanation:

Due to the fact that no one will eat the fish, their population starts growing.