QUESTION 3
Which statement is WRONG about electromagnetic waves?
A. Electric field is perpendicular to magnetic field.
B. Vibration of electric fields is perpendicular to propagation direction.
C. Different visible waves show different colors.
D. Different waves propagate in different speed.

Answer:

B. They bind to carrier proteins in order to be transported in the blood to

their target cells.

Explanation:

Steroid hormones are belongs to the class of chemical compound called steroid. Steroid hormones are majorly secreted by three glands - ovaries, testes and adrenal cortex.

Steroid hormones are released in the blood and are allowed to bind to the specific carrier proteins such as corticosteroid-binding globulin and albumin which helps them to carry to the target cells for the functioning.

The steroid hormone binds to receptor proteins in the target cell and not in the plasma membrane

Hence, the correct answer is "B. They bind to carrier proteins in order to be transported in the blood to  their target cells."

Answer:

A: Helium or Hydrogen

Explanation:

Terrestrial planets are the 4 inner most planets of the solar system which are mercury, venus, earth, Mars, while the giant planets are the 4 outer most which are Jupiter, Saturn, Uranus and Neptune.

Now, these outer most ones are the surface ones and are surrounded primarily by layers of hydrogen and helium gases.

Answer:

98.07848 grams.

Explanation:

Answer:

204.6 K

Explanation:

PV = nRT

5.6 (12) = 4 (.0821)T

67.2 = .3284T

204.6 = T

Answer:

The molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. To calculate the molarity of a solution, you divide the moles of solute by the volume of the solution expressed in liters.

Explanation:

Answer:

Soap is a mixture of sodium salts of various naturally occurring fatty acids. ... Soap is produced by a saponification or basic hydrolysis reaction of a fat or oil. Currently, sodium carbonate or sodium hydroxide is used to neutralize the fatty acid and convert it to the salt.

Explanation:

I hope this helps! ^^

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Answer:

Soap is a salt of a fatty acid used in a variety of cleansing and lubricating products. In a domestic setting, soaps are surfactants usually used for washing, bathing, and other types of housekeeping. In industrial settings, soaps are used as thickeners, components of some lubricants, and precursors to catalysts

Answer:

A

Explanation:

They both need to lose 2 electrons to form ions

Oxygen and sulphur are in the same family with the same number of valence electrons.

The electrons in an atom's outermost shell, or energy level, are called valence electrons.

Compared to oxygen, sulphur has more electron shells. This is because sulphur has three electron shells because it is in period 3 of the periodic table, whereas oxygen is in period 2 and has two electron shells.

Since there is just one link between these oxygen atoms, they will each have six valence electrons and a shared valence electron with sulphur.

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Answer:

its soooooo ezy

Explanation:

82828I 87is 818373773622771829383746171948468328933737373737378364737272828374736367181i3i46738100104848070792761527484930201834728the 8585949476425675666

Answer:

Viruses, bacteria, fungi, and parasites.

Explanation:

hope this helps and is right :)

Answer:

5.6 L is the final volume for SO₂ at STP condtions

Explanation:

The reaction is:  S(s) + O₂ (g) →  SO₂ (g)

Ratio for this reaction is 1:1, if we see stoichiometry.

1 mol of sulfur can react to 1 mol of oxygen in orden to produce 1 mol of sulfur dioxide.

Then, 0.250 moles of sulfur can produce 0.250 moles of SO₂.

If we solve this by a rule of three, we can say:

At STP 1 mol occupies 22.4L

Then, 0.250 moles will be contained at (0.250 mol . 22.4L) /1mol = 5.6 L

If we apply the Ideal Gases Law:

P . V = n . R . T

1 atm . V = 0.250 mol . 0.082 . 273K

V = (0.250 mol . 0.082 . 273K) / 1atm → 5.6 L

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Explanation:

Answer:

A substance that cannot be broken down into another substance by chemical or physical means is called an Element

Answer:

the answer is 119.0023 grams

Answer:

10/24

Simplified: 5/12

Explanation:

Well first, let's convert years into months

1 year = 12 months which means 2 years = 24 months

In fraction form we would write this as 10/24

If the question asks for it to be simplified, then simply

Both 10 and 24 evenly fit 2

Therefore, divide both the numerator and the denominator by 2

10 ÷ 2 / 24 ÷ 2

5/12

This can no longer be simplified

Answer:

d. a brittle solid.

Explanation:

Hello!

In this case, since cesium fluoride is widely known as an ionic compound due to the large electronegativity difference, it is possible to discard a. due to its crystalline structure, b. because conducting solids are metals, c. because ionic compounds are not likely to be gases and e. because even when it is soluble in water, the problem is not referring to an aqueous solution; therefore, the answer is d. a brittle solid.

Best regards!

Answer:

I think is A 690 nm or c 500 nm

The wavelength that does not belong to visible light is 900 nm. The correct option is B.

Visible light is the electromagnetic spectrum that an eye can see. The wavelength of visual light is 382 700 nanometers. The daylight is the most visible light whose wavelength is 515 NM and whose color is green and yellow. The infrared, the range of spectrums of visible light, falls between infrared and ultraviolet light.

Wavelength is the distance of 1 wave to another wave full stop as light moves in the form of waves, that difference between one crust to another crust is called the wavelength of the light.

As the wavelength of visible light is 382 700 NM option b 900 NM will be will not fall under the spectrum of visible light.

Thus, the correct option is B. 900 nm.

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Answer:

Nitrogen gas (chemical symbol N) is generally inert, nonmetallic, colorless, odorless and tasteless. Its atomic number is 7, and it has an atomic weight of 14.0067. Nitrogen has a density of 1.251 grams/liter at 0 C and a specific gravity of 0.96737, making it slightly lighter than air.

Explanation:

:)

Answer:

3

Explanation:

2,8,6

I need to know this too. Hopefully someone answers quick lol

The specific gravity of crude oil is 0.876 as 1.00 liter of water weighs 1.00 kilograms. Then weight of crude oil is 0.876 kg.

A specific gravity is a dimensionless quantity and it is defined as the ratio of density of substance to the density of water.

It is used to determine where the object will float on the surface of liquid approximately.

As, density = mass / volume

Volume of water is 1 ml given.

So, density of substance = mass of substance

Specific gravity = density of substance / density of water

So, Specific gravity = mass of substance / density of water

Mass of substance = specific gravity x density of water

                                = 0.876 x 1.00 kg = 0.876 kg

Thus, the specific gravity of crude oil is 0.876 as 1.00 liter of water weighs 1.00 kilograms. Then weight of crude oil is 0.876 kg.

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When hydrogen and oxygen combine, they form water or hydrogen peroxide, and energy is released in the process.

Oxygen and hydrogen are the chemical elements of the periodic table, and they both are gas. Oxygen is the most important gas, which is needed for breathing. It is present at 21% in the atmosphere.

Hydrogen is another gas present in nature. It is the lightest gas, and it has diatomic molecules. It remains gas at normal pressure and temperature, but it becomes liquid at low temperature.

The oxygen and hydrogen readily react and for water, and hydrogen peroxide, the process of reaction of hydrogen and oxygen releases an amount of energy.

Hence, Energy is released during the creation of water or hydrogen peroxide when hydrogen and oxygen mix.

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Answer:

0

Explanation:

Answer:

See explanation

Explanation:

Water is a polar solvent and is also called a universal solvent because of its ability to dissolve several substances especially in the body.

The functions of water learned in the life sciences class include;

1. Water is the medium for biochemical reactions

2. Most substances in the body are transported from place to place by water.

3. Water acts a solvent for many biologically important substances in the body.

4. Water is necessary in helping animals to regulate their body temperature.

Answer: The percent dissociation of butanoic acid is 9.8%

Explanation:

[tex]C_3H_2CO_2H\rightarrow H^+C_3H_2CO_2^-[/tex]

 cM                                                0             0

[tex]c-c\alpha[/tex]               [tex]c\alpha[/tex]          [tex]c\alpha[/tex]  

So dissociation constant will be:

[tex]K_a=\frac{(c\alpha)^{2}}{c-c\alpha}[/tex]

Give c= 1.4 mM = [tex]1.4\times 10^{-3}[/tex] and [tex]\alpha[/tex] = dissociation constant  

[tex]K_a=1.5\times 10^{-5}[/tex]

Putting in the values we get:

[tex]1.5\times 10^{-5}=\frac{(1.4\times 10^{-3}\times \alpha)^2}{(1.4\times 10^{-3}-1.4\times 10^{-3}\times \alpha)}[/tex]

[tex](\alpha)=0.098=9.8\%[/tex]

Thus percent dissociation of butanoic acid is 9.8%

Answer:

its your first question like imagine your literally so free so dog water like you have no earnings i am first place in fncs you was 6 th where were you your boxed like a fish eat this pump.

Explanation:

Answer:

2.99 M

Explanation:

In order to solve this problem we need to keep in mind the definition of molarity:

In order to calculate the moles of solute, we convert 125.6 g of NaF into moles using its molar mass:

As the volume is already given, we can proceed to calculate the molarity:

Answer:

Here is the answer ⬆️⬆️⬆️⬆️⬆️⬆️⬆️

The order of the given elements in increasing atomic number is given as F (9), Al (13), Ga (31), Sr (38), Zr (40), I(53) and Terbium (65).

The atomic number of an element in periodic table is the number of electrons in its neutral atom. Elements are arranged in periodic table in an increasing order of atomic number from left to right.

An atom is composed of electrons, protons and neutrons. Protons are positively charged and electrons are negatively charged particles and they are equal in an atom. Thus, the total negative charge is neutralised by the negative charges.

The order for the given elements in periodic table in an increasing atomic number is F (9), Al (13), Ga (31), Sr (38), Zr (40), I(53) and Terbium (65).

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Answer: b

Explanation:

Answer:

B.

Scientific conclusions are based on scientific evidence.

Explanation:

The scientific method in steps:

1- Question

2- Research

3- Hypothesis

4- Experiment

5- Observe

6- Make a conclusion

7- Present you findings