Observe Record the appearance (colors,
textures, etc.) of the reactants in the data table.
How many reactants are there?
DONE

Answer:

ca ater pillar

Explanation:

there cute little fuzzy guys and they're amazing and beautiful

Answer:

670.956

Explanation:

You can use this equation to solve for heat :

Q = m * c * ΔT

Q represents the heat

m represents the mass in kilograms

c is the specific heat. For aluminum, it's 897

ΔT is the change in temperature, so, 49 - 15 which is 34

Plug in the numbers and you get this :

Q = 0.022 * 897 * 34

Q = 670.956 Joules

Answer: C: Converted into another form

Explanation: pues es esa calale y si va a hacer

During a chemical or physical change, energy is converted to another form. Energy cannot be created or destroyed. During a chemical reaction, physical change the energy and mass are conserved.

According to the law of conservation of energy energy can neither be crated nor be destroyed. Hence, the total energy of a system is always conserved.

However, energy can be transformed from one form to the other. Therefore, the energy lost in one form is gained in another form. For example, in all electrical devices, the electrical energy is converting to other forms of energy such as light, thermal , mechanical etc.

Similarly, during a chemical reaction, the energy released by a reaction system is equal to the energy absorbed by other reacting system. Similarly in electrochemical cells the chemical energy is converting to electrical energy.

Find more on energy transformation:

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Answer:

no

Explanation:

In Non-metals

Period - reactivity increases as you go from the left to the right. Group - reactivity decreases as you go down the group

In Metals

Reactivity increases down a group because as nuclear shielding increases and the nucleus' hold on the valence electron weakens, therefore it is easier to remove valence electrons.

Answer:

d. cells are made of atoms and molecules. :)

Explanation:

hope i helped

Answer: If only max or min yes but if we have min and max that is a bad idea it is not as safe.

Answer:

2 A i covalent bond in hydrogen peroxide

ii ionic bond in potassium nitride

iii covalent bond in Aluminum sulphide

2 B i ionic bond in Fe3N2

ii covalent bond in C3F5

iii Ionic bond in Ca3P2

2c roman numerals represent oxidation state of that element.

Explanation:

Answer:

Mass = 50kg, a = 20m/sec^2

F = MA

F = 50 * 20

F = 1000N

F = MA

650 = M * 10

M = 650/10 = 65kg

The phenomenon of weightlessness occurs when there is no force of support on your body. when your body is effectively in free fall, accelerating downward at the acceleration of gravity, then you are not being supported.

F = Gm1m2/distance^2

F = 6.6726* 10 ^-11 * 70 * 5.98 * 10^24/(6.38 * 10^6)^2

hope it helps you

Answer:

The ocean absorbs most of the excess heat

Explanation:

Increasing ocean temperatures affect marine species and ecosystems. Rising temperatures cause coral bleaching and the loss of breeding grounds for marine fishes and mammals.

Answer:

1 mole of Na = mass of 22.99 g, 1 mole of Si = mass of 28.09 g.

Answer: 10 grams

Explanation: Original sample is 80 gram and every three days half of its composition decays so 80 down to 40 in the first 3 days, 20 in the next three days, and  10 in the last three days

Answer:

Hg

Explanation: I just took the test

Explanation:

Both (Photosynthesis and Cellular respiration)

Because

Therefore,

Both is correct✔

Answer: Science process skills include observing qualities, measuring quantities, sorting/classifying, inferring, predicting, experimenting, and communicating.

Answer:

[tex]\huge\bf\underline{\underline{\pink{A}\orange{N}\red{S}\green{W}\purple{E}\blue{R}}}[/tex]

ONLY 20.95% IN THE AIR

:)

▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃

Explanation:

Methane is a gas at room temperature but methanol is a liquid because in methane there's London dispersion intermolecular force but in methanol there's H-bond and London dispersion force. H-bond is more stronger than London dispersion force. So, it increases the boiling point of methanol that's why methane is gas at room temperature due to weak attraction of London dispersion force and methanol is liquid.

Methanol has a higher boiling point than methane due to stronger intermolecular forces (IMFs), or attraction between individual molecules. This makes its molecules more difficult to separate, requiring more energy and resulting in a higher boiling point.

An intermolecular force is a force that mediates the interaction of molecules, including electromagnetic forces of attraction or repulsion that act between atoms and other types of neighboring particles, such as atoms or ions.

Intermolecular forces are classified into five types namely,

Between ions and polar dipole molecules, ion-dipole forces exist.

Since of stronger intermolecular forces (IMFs), or attraction between individual molecules, methanol has a higher boiling point than methane.

This makes it more difficult to separate its molecules, requiring more energy and resulting in a higher boiling point.

Thus, this is the reason of using types of intermolecular forces present.

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Answer:

Flocculation is the operation in which the coagulated water must be gently mixed at a propeller speed of 15 to 20 rpm to promote the growth of the floc. ... The flocculation basin often has a number of compartments with decreasing mixing speeds as the water advances through the basin.

Answer:

the most common oxidation no.of manganese is + 2 + 3 + 4 + 6 + 7

Answer:

A.) It is a well-tested hypothesis.

Answer:

Its is a well-tested hypothesis

Explanation:

i took the test

Answer:

The greater the number of hydrogen ions, the increase in the acid strength.

Explanation:

Hydrogen ions determine the pH of the acid, greatest number of hydrogen ions give the pH value below 4 hence strong acid, and least number of hydrogen ions give a pH value above 4 but less than 7 hence a weak acid

Answer:

1) harm life forms that rely on carbonate-based shells and skeletons, 2) harm organisms sensitive to acidity

Explanation:

Answer:

Ocean acidification can negatively affect marine life, causing organisms' shells and skeletons made from calcium carbonate to dissolve.

Explanation:the more acidic the ocean, the faster the shells dissolve.

Answer: D Because it is moving at a fast pace

Explanation:

Answer: 26 out of 30.

Explanation:

Out of 30 ATP molecules, 26 are produced from maximum oxidative phosphorylation production. Two more come from glycolysis and two more are from the citric acid cycle.

To power other cellular processes, ATP captures and releases chemical energy obtained from the breakdown of food molecules.

Answer:

A - dendrites

B - cell body

C - axon terminal

D - myelin sheath

E - nucleus

Hope that helps.

A-dendrite

B-cell body

C-axon terminal

D-axon

E-nucleus

Answer:

- 2C2H6 + 7O2→4CO2+6H2O

Explanation:

Answer:

2C2H6+7O2-->4CO2+6H2O

Hope this helps!

Answer:

You can not see the sugar.

Explanation:

Answer:

1 A

3 main types of bond are

Ionic bond ( formed due to complete transfer of electron between atoms(

Covalent bond ( formed by mutual sharing of electron)

Metalic bond ( present in the metals due to mobile electrons)

1 B bond in CaO is ionic bond formation in attached image

1 C hydrogen bond with nitrogen is covelent NH3 ammonia is formed because a bond between two non metals is expected to be covalent

More their electronegativity difference between hydrogen and nitrogen is less than 1.7 that makes it covalent

Explanation:

Answer: This looks tough

Explanation:

Answer:

C. There is a negative acceleration

Explanation:

I majored in Physics