which type is every one in this picture: pure substance or mixture?​

Answer:

số đơn vị diện tích hạt nhân z là : 12 và 24

Answer:

Photosynthesis

Explanation:

Photosynthesis is the process in which plants collect radiant energy (from the Sun) and transform it into chemical energy.

Answer:

Photosynthesis is the process in which plants collect radiant energy (from the Sun) and transform it into chemical energy.

Explanation:

BECAUSE I SAID, btw its right i promise

Answer:

Explanation:

Carbon monoxide →  Prevents oxygen from being transported in the body

Nitrogen oxides → Can cause asthma

Particulate matter → Irritates lungs, dizziness, seizures, or death

Sulfur oxides → Inflammation and irritation of the respiratory system

I hope this helps!

Answer:

b and c

Explanation:

did it on edge

Answer:

8.3 feet

hope this helps! <3

Answer:

MgCl2 + H2O

Explanation:

Answer:

lysol and glue pretty simple.

Explanation:

Answer:

glue, and some laundry detergent.

Explanation:

only some laundry detergents work.

for a butter slime all you need is Elmer's wood glue, and gel shaving foam it makes a thick butter like consistency slime.

if you want to get fancy you can add a drop of food coloring and sparkles. these work good for me, you should give them a try. thank you and have a great day! if you like my answer please mark brailyist thanks again. if you have any questions please feel free to ask me! thanks again.

Answer:

the anion of a salt is able to react with a H+ ion to form a weak acid, it can be removed from the solution by adding an acid. For CuBr adding H+ forms HBr and that is a weak acid; therefore, CuBr is more soluble in acid than in water:

There are many different ways that cells can connect to each other. The three main ways for cells to connect with each other are: gap junctions, tight junctions, and desmosomes. These types of junctions have different purposes, and are found in different places.

Answer:

During sexual reproduction the genetic material of two individuals is combined to produce genetically diverse offspring that differ from their parents. The genetic diversity of sexually produced offspring is thought to give species a better chance of surviving in an unpredictable or changing environment.

Answer:

Elements in which the d-sublevel is being filled have the properties of metals

Elements in which the d-sublevel is being filled have the properties of;

transition metals.

In quantum theory the sublevel is an energy level. Now, the d-sublevel in atomic configuration has 5 orbitals and as such can contain a maximum of 10 electrons.

Now, this d-sublevel is used primarily by elements called "transition elements" as they are also called d-block elements.

However, these transition elements are also called transition metals because all the transition elements possess properties of metals generally.

In conclusion, elements in which the d-sublevel is being filled have the properties of transition metals.

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Answer:

a).

Explanation:

precise electron locations cannot be calculated, only predicted based on previous calculations. they cannot know whether or not an electron will be or will not be somewhere specific

have a nice day!

Explanation:

The speed at which a planet orbits the Sun changes depending upon how far it is from the Sun. When a planet is closer to the Sun the Sun’s gravitational pull is stronger, so the planet moves faster. When a planet is further away from the sun the Sun’s gravitational pull is weaker, so the planet moves slower in its orbit.

Answer:

I'm gonna guess it's a suspension

Explanation:

let me know if I'm wrong

Answer:

c. valence electrons

Explanation:

Answer: both are mixtures , Brainliest please

Explanation:

Answer:

C) is the correct answer

Considering the definition of percent by volume concentration, the correct answer is option D: the percent by volume concentration of the solution is 1.50%

Percent by volume concentration is a measure of concentration that indicates the volume of solute per 100 volume units of the solution. This value is calculated by dividing the volume of the solute by the total volume of the solution, and multiplying by 100 to express it as a percentage:

[tex]percent by volume concentration=\frac{volume of solute}{total volume of the solution}x100[/tex]

In this case, you know:

Replacing in the definition of percent by volume concentration:

[tex]percent by volume concentration=\frac{3 mL}{200 mL}x100[/tex]

Solving:

percent by volume concentration=0.015×100

percent by volume concentration=1.50

Finally, the correct answer is option D: the percent by volume concentration of the solution is 1.50%

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Answer:

a) Alkali

b) Na

c) Cs

d) Inner Transition

e) actinides

f) Fe

g) Hg

Explanation:

Answer:

It is the length of these chains, and the patterns in which they are arrayed, that make polymers strong, lightweight, and flexible.

Explanation:

Synthetic polymers are made up of long chains of atoms, arranged in repeating units, often much longer than those found in nature. It is the length of these chains, and the patterns in which they are arrayed, that make polymers strong, lightweight, and flexible. In other words, it's what makes them so plastic.

Answer:

Acidic oxide, so², So³, Co², Cl²O7

Basic oxide: CaO, MgO, Na O

Explanation:

An oxide that combines with water to give an acid is termed as an acidic oxide. The oxide that gives a base in water is known as a basic oxide.

Answer:

: \large \boldsymbol {\rm x > 5 \ or \ x\in (5\ ; \ \infty ) }x>5 or x∈(5 ; ∞)

Step-by-step explanation:

\begin{gathered}\large \boldsymbol {} \displaystyle -2(3x+2) > -8x+6 \\\\ -6x-4 > -8x+6 \\\\ 8x-6x=6+4 \\\\ 2x > 10 \\\\ x > 5 \ or \ x\in (5\ ; \ \infty )\end{gathered}

−2(3x+2)>−8x+6

−6x−4>−8x+6

8x−6x=6+4

2x>10

x>5 or x∈(5 ; ∞)

Answer:

B : 127m/s

Explanation:

= 500 ÷ 3.92

= 127.5

Answer:

16

Explanation:

you can line up the fareinheit and celsius and see that the celsius is 16

Answer:

15 and 290 for the first question, if it drops 30 it will get to be 30 f, -0 c and 273 k

HAve a wonderful day!

Answer:

frequency  = 8.22 x 10¹⁴ s⁻¹

Explanation:

An electron's positional potential energy while in a given principle quantum energy level is given by Eₙ = - A/n² and A = constant = 2.18 x 10⁻¹⁸j. So to remove an electron from the valence level of Boron (₅B), energy need be added to promote the electron from n = 2 to n = ∞. That is, ΔE(ionization) = E(n=∞) - E(n=2) = (-A/(∞)²) - (-A/(2)²) = [2.18 x 10⁻¹⁸j/4] joules = 5.45 x 10⁻¹⁹ joules.

The frequency (f) of the wave ionization energy can then be determined from the expression ΔE(izn) = h·f; h = Planck's Constant = 6.63 x 10⁻³⁴j·s. That is:

ΔE(izn) = h·f => f = ΔE(izn)/h = 5.45 x 10⁻¹⁹ j/6.63 x 10⁻³⁴ j·s = 8.22 x 10¹⁴ s⁻¹

Answer:

We don’t have the enzymes necessary to remove nitrogen from the atmosphere; we get our nitrogen from the food we eat. ^^

Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.

Nitrogen is a key element in the nucleic acids DNA and RNA, which are the most important of all biological molecules and crucial for all living things. DNA carries the genetic information, which means the instructions for how to make up a life form.

It is used to make amino acids in our body which in turn make proteins. The human body comprises 3% nitrogen (by mass). It is an essential part of amino acids (makeup proteins), nucleic acids (DNA, RNA), ATP (energy molecule), etc. It is nearly impossible to live without nitrogen.

Therefore, Although almost 80% of the atmosphere is made up of nitrogen gas, most living things don't have the enzymes necessary to use nitrogen directly from the atmosphere. We obtain the nitrogen we need to make proteins and DNA, if we can't obtain it from breathing we can get it by eating organic plants and animals.

Learn more about nitrogen here:

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Answer:

No change...

Explanation:

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted. So the mass of the product equals the mass of the reactant.

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The part that contains the information that a plant cell uses for growth and activities is known as Chromosome. Thus, the correct option for this question is C.

Chromosomes may be defined as thread-like structures that appear during cell division. These structures are present in the nucleus of the cell and are made up of DNA, RNA, histones, and some non-histone proteins.

Chromosomes were first discovered by E. Strasburger in 1875. But the term chromosome was given by Waldeyer in 1888. Ultimately, the nucleus of the cell contains all sorts of genetic information which are essential for the growth and activities of organisms.

The Nucleus contains DNA which is known as the genetic material of most organisms including plants.

Therefore, a chromosome is a part that contains the information that a plant cell uses for growth and activities. Thus, the correct option for this question is C.

To learn more about Chromosomes, refer to the link:

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3 H₂    +    N₂   →   2 NH₃

   ↓            ↓

4 mol       3 mol

Since the moles of N₂ is the smaller of the two reactants, then N₂ is the limiting factor (the reactant that will decide how much ammonia is produced since it has the smaller amount of moles). ∴ we have to use it in calculating the number of moles of ammonia

The mole ratio of N₂ to NH₃ based on the balanced equation is 1 to 2.

∴ the moles of NH₃ = moles of N₂ × 2

                                =  3 moles × 2

                                = 6 moles