PLEASE HELP WILL GIVE BRAINLEST
Which relationship explains how the water can boil at room temperature?
A Lower air pressure results in a lower boiling point
B. Lower air temperature results in a lower boiling point
C. Lower air pressure results in a higher boiling point
D. Lower at temperature results in a higher boiling point

Answer: B. a chemical change

Explanation:

Answer:

2.30156

Explanation:

Answer:

2.30156

Explanation:

becuase one knot is equivalent to 1.15078, two knots is equivalent to 2.30156

Answer:

Monocarbon tetrasulfide

Explanation:

Name of compound is mono carbon tetrasulfide.

Compound is defined as a chemical  substance  made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not  called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:

1)Molecular compounds where in atoms are joined by covalent bonds.

2) ionic compounds where atoms are joined by ionic bond.

3)Inter-metallic compounds where atoms are held by metallic bonds

4) co-ordination complexes where atoms are held by co-ordinate bonds.

They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.

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Answer:

[tex]Na_{3} AlF_{6}[/tex]

Answer:Atoms acquire the stable electron structure of a noble gas by losing electrons. An atom of an element in Group 1A has seven valence electrons. Among Group 1A and 2A elements, the group number is equal to the number of valence electrons in an atom of that element.

Explanation: Hope this help have an wonderful day and stay safe! :D

Answer:

B

Explanation:

A P E X

The amount of product obtained / amount possible x100. Hence, option B is correct.

To express the efficiency of a reaction, calculate the per cent yield using this formula:

%yield = (actual yield/theoretical yield) x 100.

A per cent yield of 90% means the reaction was 90% efficient, and 10% of the materials were failed and not in use.

Hence, option B is correct.

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Answer:

the statement is true.....

Answer:

22 students

Explanation:

i just answered it for a quiz and its correct

Answer:

2 Pb(NO3)2 = 2 PbO + 4 NO2 + O2

2 KNO3 = 2 KNO2 + O2

4 Al + 3 O2 = 2 Al2O3

60KI + 3H20 + 40O3 → 60KOH + 30I2 + 30O2

2 FeCl3 + SO2 + 2 H2O = 2 FeCl2 + 2 HCl + H2SO4

Check if its right

Explanation:

2Pb(NO3)2=2PbO+4NO2+ O2

4KNO3=4KNO2+2O2

8AL+6O2=4AL2O3...

I tried ....

Answer:

chemonoia

Explanation:

Many people have a strong fear of “chemicals” that belies the evidence. It's called chemonoia – and it may be damaging their health. If you were paranoid, you might think there really was something in the water that's damaged our sense of reason.

Answer: thinking

Explanation:

A mental disorder are ways of unusual feeling, or acting that are thinking. Therefore, option A is correct.

A clinically significant impairment in a person's intellect, emotional control, or behavior is what is known as a mental disorder. It is typically linked to distress or functional impairment in key areas.

Mental illness has many causes, not just one. Your genes and family history are only two examples of the many variables that can increase your risk for mental illness. Your life experiences, particularly if they occurred as a youngster, such as stress or a history of abuse.

Depression is the most prevalent mental condition, affecting an estimated 300 million individuals, and often affects women more frequently than males.

Thus, option A is correct.

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Answer:

162.4

Explanation:

Because yea thats the answer no need to tell you why ok bye

Answer:

B

P

K

Explanation:

K: 203pm

B: 84pm

P: 107pm

There isn't an E on the Periodic Table?!

Answer:

frequency

Explanation:

i took the test

Answer:

Explanation:

trueeeeeeeeeeeeeeeeeeeeeeeeeee

Answer:

option B . because acording to Newton 1st law until or unless you donot  apply force the object will not move or stops.

Explanation:

Answer:

The answer is c, i just got it right on my test

Explanation:

stay safe!

Answer:

The largest of the volcanoes in the Tharsis Montes region, as well as all known volcanoes in the solar system, is Olympus Mons. Olympus Mons is a shield volcano 624 km (374 mi) in diameter (approximately the same size as the state of Arizona), 25 km (16 mi) high, and is rimmed by a 6 km (4 mi) high scarp.

Explanation:

Answer:

wavelength λ =  35.92 pm

Explanation:

Given that:

The glancing angle (θ) = 10.42°

Bragg reflection n = 1

wavelength λ = ???

diameter d = 99.3 pm

Using the formula:

nλ = 2dsinθ

we have:

1 × λ = 2 × ( 99.3) × sin (10.42°)

λ =  198.6 × 0.18086

λ =  35.92 pm

The wavelength of the X-rays that is used is equal to 35.9 nanometers.

Given the following data:

To calculate the wavelength of the X-rays that is used, we would apply Bragg's law of reflection:

Mathematically, Bragg's law of reflection is given by the formula:

[tex]n\lambda = 2dsin\theta[/tex]

Where:

Substituting the given parameters into the formula, we have;

[tex]1 \times \lambda = 2 \times 99.3 \times 10^{-11} \times sin(10.42)\\\\ \lambda = 1.99 \times 10^{-9} \times 0.1809\\\\\lambda = 3.59 \times 10^{-10}[/tex]

Wavelength = 35.9 nanometers.

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Answer:

The concentration is 50%

Explanation:

Mass-Volume concentration is molarity (M) times 100% or [tex]\frac{Gsolute}{Lsoln}[/tex] * 100%

For this problem, we need to convert from milligrams to grams and milliliters to liters in order to plug the values into the equation and solve for the concentration.

So, 250 mg = 0.025g (there are 1000 mg in 1 g)

And 500ml = 0.05 L  (there are 1000 ml in 1 L)

Now we can solve for the concentration

[tex]\frac{0.025 g}{0.05 L}[/tex] [tex]* 100[/tex] %=  0.5 [tex]* 100[/tex] % = 50% of Tylenol concentration

Answer:

because its yellow

Explanation:

because rats like yellow

Answer:

rain

Explanation:

rain drops are water and water us a liquid

Answer:

The chemical name is C16H11N2NaO4S

Explanation:

Answer:

1-T

2-F

3-T

4-T

Explanation:

big brain

it is 3.9 i know tgis because you throw a rock with a mass of 3.6 kg. the ball leaves your hand with a speed of 10

Answer:

Mg + O2 → MgO

Explanation:

Answer:

Metallic character (becoming less metal like)

Explanation:

I took the test

The volume of Carbon dioxide : 29.12 L

Given

CH4 (g) + 202(g) → CO2(g) + 2H2O(g)

Oxygen volume = 63.3 L

Methane volume = 29.2 L

The volume of Carbon dioxide

Solution

1 mol gas at STP = 22.4 L

mol methane :

[tex]\tt \dfrac{29.2}{22.4}=1.3[/tex]

mol oxygen :

[tex]\tt \dfrac{63.3}{22.4}=2.83[/tex]

limiting reactant : CH₄(smaller ratio:mol/reaction coefficient)

So mol CO₂ based on CH₄

From equation, CO₂ : CH₄ = 1 : 1, so mol CO₂ = 1.3

The volume =

[tex]\tt 1.3\times 22.4=29.12~L[/tex]

The volume of carbon dioxide is produced in the reaction is 29.12 L

We know that

1 mol gas at STP = 22.4 L

So,

The mol methane is

[tex]= 29.2 \div 22.4\\\\= 1.3[/tex]

Now

The  mol oxygen is

[tex]= 63.3 \div 22.4\\\\= 2.83[/tex]

Now the volume is

[tex]= 22.4 \times 1.3[/tex]

= 29.12 L

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