How are the components of the electromagnetic spectrum, from radio waves to gamma rays, grouped?

Answer:

Cells produced by meiosis are genetically identical, and cells produced by mitosis are genetically unique.

Explanation:

Cells produced by mitosis possess half the genetic material of cells produced by meiosis. Mitosis only occurs in the presence of oxygen, while meiosis can occur in the absence of oxygen.

Answer:

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Explanation:

Answer:

molar mass of Aucl3

is 303.33 g/ mol

Answer:

The correct answer would be -

Thymine to adenine

Cytosine to guanine

guanine to cytosine

Adenine, and "U" uracil respectively.

Explanation:

mRNA is a sequence of complementary base sequences encoded from a gene or DNA segment which is used to produce the protein by the process called translation.

From converting a sequence from DNA to its complementary mRNA sequence, the rules of complementary base pairing will be applied: Cytosine (C) is replaced with Guanine (G) – and vice versa. Uracil (U) is replaced by Adenine (A) and Thymine is replaced by adenine.

Answer:

10 μg or 1 x 10⁻⁵ g

Explanation:

The concentration of lead ion is given in parts by billion (ppb), which means that there are 5 micrograms (μg) of lead in 1 liter of water sample:

5 ppb = 5 μg lead ion/L

If we assume that the density of the water sample is equal to 1 g/ml (density of water at 25°C), we can say that 2000 g of sample is equal to 2000 mL:

sample volume = 2000 g x 1 mL/g = 2000 mL x 1 L/1000 mL = 2 L

Thus, the amount of lead ion in 2000 g (or 2 L) of water sample is:

mass of lead ion = 5 μg lead/L x 2 L = 10 μg x 1 g/10⁶μg = 1 x 10⁻⁵ g

Answer:

hope this help !

Explanation:

Use the given functions to set up and simplify 173 ° C .

1.5 =

CH4 = CH4

4.4 = CH4

173 ° C = CH4

Answer:

To be stable an atom will gain, lose, or share electrons to complete the outer most energy level (electron shell). Octet Rule because levels 2 and 3 need 8 electrons to be stable.

If 28.0 grams of N2 and 5.04 grams of H2 are reacted, producing 17.8 grams of NH3. the percent yield is 52.4%. Therefore, the answer is option 3,

To calculate the percent yield, we first need to calculate the theoretical yield of NH3 based on the amounts of N2 and H2 that were reacted.

The balanced chemical equation for the reaction is:

N2 + 3H2 → 2NH3

From the equation, we can see that 1 mole of N2 reacts with 3 moles of H2 to produce 2 moles of NH3. Therefore, the moles of N2 and H2 reacted can be calculated as:

moles of N2 = mass of N2 / molar mass of N2

= 28.0 g / 28.014 g/mol

= 0.999 mol

moles of H2 = mass of H2 / molar mass of H2

= 5.04 g / 2.016 g/mol

= 2.5 mol

Since N2 is the limiting reactant (its mole value is less than H2's mole value), we can calculate the amount of NH3 produced based on the mole ratio of N2 and NH3:

moles of NH3 = 2/1 x moles of N2

= 2/1 x 0.999 mol

= 1.998 mol

The theoretical yield of NH3 can be calculated from its mole value:

mass of NH3 = moles of NH3 x molar mass of NH3

= 1.998 mol x 17.031 g/mol

= 34.06 g

Now, we can calculate the percent yield by dividing the actual yield (17.8 g) by the theoretical yield (34.06 g) and multiplying by 100:

percent yield = actual yield / theoretical yield x 100%

= 17.8 g / 34.06 g x 100%

= 52.24%

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Explanation:

I believe mitosis is the answer

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Answer:

Elements are distinguished from one another by their atomic numbers. No two elements have the same atomic number. It is the atomic number, and therefore the number of protons in its atomic nuclei, that define an element.

Answer:

If there is no subscript written after a symbol that means there is one atom of that element present

Explanation:

correct me if I'm

If there is no subscript on an element's chemical  symbol there is one atom of that element.

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.Elements combine to form compounds.

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Answer:

1

4

5

6

Explanation:

all magnets have opposite poles (north and south)

magnetic domains are aligned

moving electrons generate a magnetic filed

movement of electrons creates a magnets field

attracted to iron, nickel and cobalt

Answer:

!atoms in the nitrogen family.. have 5 valence electrons. They tend to share electrons when they bond. Other elements in this family are phosphorus, arsenic, antimony, and bismuth.

Answer:

7

Explanation:

Bec g1 has to lose one electron and g7 has to gain one electron

Answer:

3.45 moles Li  contains  2.08 × 10 (to the power of)24  atoms .

Explanation:

The relationship between atoms and moles is:

1  mole atoms =

6.022 × 10 (to the power of)23

atoms

In order to determine how many atoms occupy a given number of moles, multiply the given moles by  

6.022 × 10 (to the power of)23

atoms/mole

.

In the case of 3.45 moles lithium (Li):

3.45 mol Li × 6.022 × 10 (to the power of)23  atoms Li/ 1 mol Li =

2.08 × 10 (to the power of)24

atoms Li  rounded to three

Answer: 3.45 moles Li contains 2.08 × 10 (to the power of)24 atoms

Explanation:

Answer:

41.67 ml HCl

Explanation:

n = M x V

Since the number of moles is the same:

M1 x V1 = M2 x V2

V1 = M2 x V2 /M1 =(0.1 L x 5.0 M) / 12.0 M = 0.041667 L = 41.67 ml

Answer:

m = 21.915 g of NaC to create the right balance between

The number of moles of NaCl is 1.31 moles. This can be calculated by using the molarity formula i.e. M=n/V.

Molarity is defined as the ratio of the number of moles of solute to the Volume of solution in liters.

It is given by:

M = n/V

What information do we have?

Volume = 5.25 L

Molarity = 0.25 M

To find:

Moles=?

On substituting the values:

M=n/V

0.25 M =n/ 5.25 L

n= 0.25M*5.25 L

n=1.31 moles

Thus, the number of moles of NaCl are 1.31 moles.

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Answer:

chemical potential energy - It mainly has chemical potential energy, this is really a type of electrical potential energy stored in the chemical bonds of the molecules

Explanation:

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Answer:

C) silver bromide

Explanation:

Calcium bromide is incorrect.

The compound which is insoluble in water is silver bromide (AgBr).

Those compounds which have high attraction force between their constitutes ions as compare to ions between the water and compounds are insoluble in water.

Among given compounds all are soluble in water except silver bromide, because silver is having high nuclear charge than other given alkali metals as calcium, potassium and sodium. So it tightly attracts the bromide ion towards itself and this attraction is more than the attraction between the H⁺ ion of water and bromide ion, as a result of which it is insoluble in water.

Hence, option (C) is correct i.e. silver bromide.

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Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, cobalt has larger atomic radius than nickel.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

On going down the group of periodic table size increases due to increase in number of shells, on going from left to right in a period the size decreases because of increase in effective nuclear charge. Cobalt or nickel comes in the same period, cobalt comes first to nickel. Cobalt has larger atomic radius than nickel. Ni and Co belongs to d block.

Therefore, cobalt has larger atomic radius than nickel.

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Answer:

silicon

Explanation:

Silicon is at a higher level than germanium, tin, and lead.

Most semiconductors are made up of silicon. Thus, the correct option for this question is D.

A Semiconductor may be defined as a type of solid substance that possesses an electrical conductivity between that of an insulator and a conductor. It has a specific electrical property that allows it to function as a foundation for computers and other electronic devices.

Silicon is the most widely utilized in the manufacturing of semiconductors. Apart from this, germanium, gallium, and arsenide are also used. Among all these elements, germanium was one of the earliest semiconductors material used.

Semiconductors are widely used in the production of Integrated circuits (ICs) and electronic discrete components such as diodes and transistors.

Therefore, most semiconductors are made up of silicon. Thus, the correct option for this question is D.

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1.02 moles of NaCl are present in 60 grams sample of NaCl (sodium chloride).

Moles of any substance is calculated as:

n = W/M, where

W = given mass of NaCl = 60 grams (given)

M = molar mass of NaCl = 58.44 g/mole

On putting these values in the above equation, we get

n = 60 / 58.44 = 1.02 moles

Hence, 1.02 moles are present.

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Answer:

C

Explanation:

In evolutionary theory, adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment.

Answer:

adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment. .

Explanation:

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Answer:

The wavelength of this light is 780.4 nm.

Explanation:

Given that,

The frequency of laser light, [tex]f=3.844 \times 10^{14}\ Hz[/tex]

We need to find the wavelength of this light.

We know that,

[tex]c=f\lambda[/tex]

Where

[tex]\lambda[/tex] is the wavelength of light

So,

[tex]\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{3.844 \times 10^{14}}\\\\=7.804\times 10^{-7}\ m\\\\=780.4\ nm[/tex]

So, the wavelength of this light is 780.4 nm.

Answer:

Orion is located on the celestial equator. Its location causes the rest of the stars to appear to revolve around Orion as the Earth rotates.

Explanation:

The above stated statement is the reason why those who watches for stars commonly called the star watchers use the Orion as their base point in star observation. Without this, it would be difficult to trace the stars or know the exact ones which appears on the sky.

I think its d but im not sure

Answer:

Below

Explanation:

The answer is C, because ecosystems include:

Competition

Predation

Consumption

Parasitism

Disease

Symbiosis