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What volume is indicated on each of the graduated cylinders below? The unit of volume is mL. Make sure to check the units of graduation to get the most accurate reading possible

Answer:

B. Physical process is the way distillation can be separated.

Answer:    

Isotopes are versions of the same element. They have the same number of protons and electrons as the element but different mass numbers and number of neutrons.

Explanation:  

one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table.

Answer:

The extract is boiled with FeSO4 and acidified with concentrated H2SO4. The appearance on Prussian blue colour indicates the presence of nitrogen

Explanation:

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Answer:

Option 1 Data

Answer:

data

Explanation:

that is the answer

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Answer:

20 m/s

Explanation:

solution,

initial velocity (u)=0 m/s

Distance covered(s)=100m

Time taken(t)=10 seconds

Acceleration (a)=2m/s²

Now,

By using first equation of motion, we have

v=u+at

=0+2×10

=20 m/s

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Explanation:

idea= hypothesis

xperience in nature= read Darwin's theory..

with birds from Galapagos island or rain forest environment., had proven that the shape of a bird's beaks, determined what their diet consisted of In the wild.

captured birds from such countries, has proven, an omnivore or seed eater...through testing plus dissection.

Answer:

1 = 252g, 2 = 2mL, 3 = 1.5mL, 4 = 3g, 5 = 225g, 6 = 0.92g/mL, 7 = 0.75g/mL, 8 = 0.71g/mL, 9 = 1.9mL, 10= 1.11mL, 11 = 76.9g

Explanation:

This problem is testing how well you can move around the equation D = m/v where D = Density (g/mL), m= mass of sample (g), v = volume of sample (mL).

There are various type of chemical reactions in chemistry like combination reaction , displacement reaction. One of these is the decomposition reaction. The correct option is option D.

Decomposition reaction is the one in which molecules breaks down in its constituent in presence of energy. Energy can be in any form, it can be light energy , heat energy.

Decomposition of water is done by providing electricity and the reaction is called electrolysis. Lysis means to break. To give decomposition reaction molecule must have more than one element.

The fourth reaction describe a decomposition reaction (NaNO3 decomposed to become NaNO2 and O2). First and third reaction are considered combustion reaction (reacting with oxygen). Second reaction is acid-base reaction.

Therefore, the correct option is option D.

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Answer:

The answer is the 4th one

The statement about metals and nonmetals that is correct is: "The  Metals can be hammered into thin sheets, and nonmetals are brittle."

Metals are found mostly towards the left hand side of the periodic table. Non-metal character increases as you move towards the right hand side of the table.

One common property of metals is that they are malleable; this means that they can be hammered into sheets while a common property of nonmetals is that most of them are brittle.

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i found this. there's more coming up

Answer:

electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals.

Answer:

The excretory system removes waste from the body. remove waste from the blood. The digestive system breaks down the food you eat into nutrients that provide energy and building materials for cells. The digestive and excretory sytems work together to process the food that you eat.

Answer:

B. Knowing the color and brightness of a star

Explanation:

Answer:

what is the story about actually.i think it's from ur lesson

Explanation:

certain breads mold easily...(fact)..

especially white bread., when exposed to any moisture, from refrigeration, or freezing..

when taken out of (cold environment), humidity in air causes molding because you take it from cold to/warm environment.

check expiration dates, keep refrigerated, and inspect 4 molding. Companies like WMART, buy in bulk, when on shelf, defrosts,, then has molding within expiration dates..

A dehydration reaction (or condensation reaction) is the process in which water molecules are produced as a polymer is formed from monomers.

A chemical reaction is the process by which substances called reactants are transformed to another substance known as products through the breaking up or building up of bonds between the reactants.

There are different types of chemicals reaction which includes condensation reaction.

Condensation reaction involves the combination of two smaller molecules known as monomers to for one larger molecule known as polymer with the loss of water molecule.

Condensation reaction is specifically called dehydration reaction due to the loss of water molecule that is involved.

Therefore, a dehydration reaction (or condensation reaction) is the process in which water molecules are produced as a polymer is formed from monomers.

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True.

The Mass Undergoes change only in ( Solid state to liquid state ) Ice Cube to Water .

Mass changes from mg to litre.

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Answer:

Hydrogen is usually classified as a group 1 element since it has one valence electron, just like group 1 metals.

Explanation:

Answer:

Explanation:s the gravitational field strength on Earth's 9.8 N kg?

The gravitational field strength of the Earth is 10 N/kg (10 newtons per kilogram).

Nguyên tố hóa học, thường được gọi đơn giản là nguyên tố, là một chất hóa học tinh khiết, bao gồm một kiểu nguyên tử, được phân biệt bởi số hiệu nguyên tử, là số lượng proton có trong mỗi hạt nhân.

Answer:

no all protons in an element doesn't contain an identical number of neutrons . number of electrons and number of protons contain identical number but the number of neutrons may vary. for eg: protons and neutrons of hydrogen is 1 and 0 respectively whereas protons and neutrons of helium is 2 and 2 .

Answer:

All are periodic changes

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Answer:

the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom.In a periodic table arranged in order of increasing atomic number, elements having similar chemical properties naturally line up in the same column.

The elements on the periodic table are arranged on the basis of highlighting similarities between elements. Thus, the correct option for this question is A.

The elements on the periodic table are basically arranged on the basis of increasing their atomic number. These atomic number is represented by the number of protons in the nucleus of an element.

According to the question, the elements possessing identical chemical properties are arranged in the same group. For example, group 17 is known as the halogen group. Among this group, the elements bear one electron short to fulfill their octet.

The whole periodic table comprises of 18 groups and 7 periods.

Therefore, the elements on the periodic table are arranged on the basis of highlighting similarities between elements. Thus, the correct option for this question is A.

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Answer:

it's yellowish in color plz Mark me as brainliest

Answer:

It's a yellowish color like copper

Answer:

the surface area of a solid reactant.

temperature.  

presence/absence of a catalyst.

Answer:

B and A.

Explanation:

Many of the great scientists were religious. But the answer is not D.

A scientist may have strong opinions. That was certainly true of Newton. Most of the time he was right. Still the answer is not C. Science requires an open mind.

The answer is between A and B. Many discoveries were made looking at the natural world. That may provide the inspiration. But I don't think it is the answer. I'm going to say A

B is the other answer. Between A and B many scientific truths have been discovered.

Answer:

Water vapor molecules in the air near the can cooled when energy from the air transferred to the cold can. These water molecules slowed down, condensed to liquid water, and then froze to become ice. Your can might have some water and some ice on the outside of it.

Explanation:

Answer:  0.050 moles of NaOH

Explanation:  The molar mass of NaOH is 40.0g/mole

2.0g/40.0g/mole  =  0.050 moles (2 sig fig)