One way to determine if a rock sample is metamorphic is by:
a.
finding fossil evidence
c.
noting a crystalline structure in its particles
b.
noticing light and dark color bands
d.
all of the above

Answer:

Independent variable

aluminium ball

2.168 L of air will leave the container as it warms

Given

V₁=2.05 L

T₁ = 5 + 273 = 278 K

T₂ = 21 + 273 = 294 K

Required

Volume of air

Solution

Charles's Law  

When the gas pressure is kept constant, the gas volume is proportional to the temperature  

[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]

Input the value :

V₂=(V₁.T₂)/T₁

V₂=(2.05 x 294)/278

V₂=2.168 L

Answer:

This law states that the volume and temperature of a gas have a direct relationship: As temperature increases, volume increases, when pressure is held constant. Heating a gas increases the kinetic energy of the particles, causing the gas to expand.

Explanation:

Considering the Charles's law and STP conditions, the volume of the gas at standard temperature is 12.61 L.

Charles's law establishes the relationship between the volume and temperature of a gas sample at constant pressure.

This law says that for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. That is, the volume is directly proportional to the temperature of the gas.

Mathematically, Charles's law states that the ratio between volume and temperature will always have the same value:

[tex]\frac{V}{T} =k[/tex]

Considering an initial state 1 and a final state 2, it is fulfilled:

[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C (or 273 K) are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

In this case, you know:

Replacing in the definition of Charles's law:

[tex]\frac{13.4 L}{290 K} =\frac{V2}{273 K}[/tex]

Solving:

[tex]V2= 273 K\frac{13.4 L}{290 K}[/tex]

V2= 12.61 L

Finally, the volume of the gas at standard temperature is 12.61 L.

Learn more about

Charles's law:

https://brainly.com/question/4147359

STP conditions:

brainly.com/question/26364483

brainly.com/question/8846039

brainly.com/question/1186356

#SPJ2

Answer:

B wind blowing away sediment

Explanation:

Erosion is the process whereby soil, nutrients, particles are transported away from one place to another via agents like water and wind. Generally, erosion exercises its effect on the surface of the soil.

Since erosion can occur as a result of action of water or wind on the surface of the Earth, "wind blowing away sediment" is an example of erosion among the other options listed in the question.

Answer:

Center of gravity

Explanation:

Gravity always acts downward on every object on earth . Gravity multiplied by the objects mass produces a force called weight. Although the force of an objects weight acts downwards on every partial of the object , it is usually considered to act as a single force through its balance point , or center of gravity.

Answer:

.0787 moles

Explanation:

I'm assuming you mean moles of gold present as the "amount."

This is a moles to moles calculation, so we set it up as such:

*Note that 15.5g Au is given to us, and 197 g / mol of Au is gold's molar mass.

15.5g Au * (1 mol Au / 197 g Au) = ?

We can evaluate the equation to get 15.5 / 197 to get .0787 moles of Au.

Answer: Electrons

Explanation: The electrons are found outside the nucleus and orbit it.

Answer:

The organism has a nucleus

Explanation:

According to this question, a student makes a claim that an observed organism is not a Bacteria. Organisms have been classified into two major domains based on their nucleus. Eukaryotic organisms have a well-defined double membrane nucleus while prokaryotes do not.

The organism being observed in this question posseses a nucleus and many chloroplasts meaning that the organism is most likely an EUKARYOTE. The observations that backs the student claim is that the organism has a nucleus. Bacteria is an example of prokaryotic organisms with no nucleus in their cell.

Answer:

0.45

Explanation:

We can calculate the probability of randomly selecting one button that is not white by using the formula:

Number of non-white buttons / Total Number of buttons.

We can calculate the number of non-white buttons with the information given by the problem:

# Non-White buttons = 4 + 6 = 10

Now we calculate the probability:

10 / 22 = 0.45

The probability is 0.45, or a 45% chance.

Answer:A=1 B= 3 C=2

Explanation: if you put a 2 where C is then the amount will then change to P4O6. so therefore keeping the P4 on the left side the same will keep that same amount & putting a 3 with the O2 on the left will increase the amount for it to be equal on both sides.

hope that makes sense sorry!

Explanation:

Anions and cations have different atomic sizes than the neutral atoms.

When the bromine atom becomes an anion, it ______ in size.

Anions involves gaining extra electrons. This basically leads to increased repulsion between the electrons and thereby increasing the size. Anions are always larger than the neutral atoms.

This means the answer is A. Increase

When the strontium atom becomes a cation, it ______ in size.

Cations involves losing valence electrons. This basically leads to a decrease in electron shells and electron repulsion thereby reducing the size. Cations are always larger than the neutral atoms.

This means the answer is B. Decrease

Answer:

Elements in group I have one valency electron.

Answer: milligrams

Explanation:

Because 0.007960 = 1.75487961e-5 pounds

And 0.7960= 1.75488e-6

Answer:

V₂  = 1866.32 mL

Explanation:

Given data:

Initial temperature = 27.8°C (27 + 273.15 K = 300.15 k)

Initial volume = 1500 mL

Final volume = ?

Final temperature = 100.0°C (100.0 + 273.15 K = 373.15 K)

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

1500 mL / 300.15 k = V₂ / 373.15 K

V₂  = 1500 mL× 373.15 K/ 300.15 k

V₂  = 560175 mL. K /300.15 k

V₂  = 1866.32 mL

Answer:

Avogadro's number or Avogadro's constant.

Answer:

oxygen as it has 6 valence electrons

Answer:

1) contraction

2) 1.54 liters

3) 150°C

4) The gas expands proportionally to the increase in temperature

5) false

6) true

7)pentane

8) it has a boiling point around 35°

Explanation:

Answer:

The reason why wind blows is it is because of the warm air...weighs less less than cold air, which rises. After that the cool air will move in replace of the rising warm air. The movement of the air is basically what makes the wind blow.

Answer:

Total Dissolved Solids (TDS): A measure of all dissolved substances in water, including organic and suspended particles that can pass through a very small filter. TDS is measured in a laboratory and reported as milligrams per liter (mg/L).

d) 22.1 moles of sulfur

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

707 g S (Sulfur)

Step 2: Identify Conversions

Molar Mass of S - 32.07 g/mol

Step 3: Convert

Step 4: Round

Our closest answer is d) 22.1 moles of sulfur

This is due to dividing different rounded values.

Answer:

[tex]\boxed {\boxed {\sf D. \ 22.1 \ moles \ of \ sulfur}}[/tex]

Explanation:

To convert from moles to grams, we must use the molar mass. This can be found on the Periodic Table.

We are given a sample of sulfur. Look for the symbol S on the table.

This tells us the mass of 1 mole of sulfur. Use this molar mass as a ratio.

[tex]\frac{32.07 \ g \ S}{1 \ mol \ S }[/tex]

Multiply by the given number of grams (707).

[tex]707 \ g \ S *\frac{32.07 \ g \ S}{1 \ mol \ S }[/tex]

Flip the fraction so the grams of sulfur will cancel out.

[tex]707 \ g \ S *\frac{ 1 \ mol \ S }{32.07 \ g \ S}[/tex]

[tex]707 *\frac{ 1 \ mol \ S }{32.07 }[/tex]

[tex]\frac{ 707 \ mol \ S }{32.07 }[/tex]

[tex]22.0455254 \ mol \ S[/tex]

The number we caluclated is the closest to answer choice D: 22.1 moles of sulfur

Answer:

1.35 grams of  Aluminum.   I think!!!!  :|

Explanation:

laurenercsp6fpli  I'm about done with your foolishness!!!  NOW STOP!!!

Answer:

6. 350kg

7. 800kg

8.600 meters

Explanation: I don’t like Stealing point but this is what I think I should give you and I don’t know how your teacher learn you this...

Answer:

6 is 350kg

7 is 800kg

8 is 600 meters

Explanation:

Thanks btw

Answer:

Option D

Explanation:

The nucleus of an atom consists of both protons and neutrons

Answer:

d

Explanation:

the nucleus of an atom contains protons and neutrons.

Answer:

its metal because its metal

Answer:

Heterozygous refers to having inherited different forms of a particular gene from each parent.

Explanation:

Answer:

The ions have a normal, repetitive structure called an ion lattice. The lattice is formed when the ions attract each other and form a regular sequence of oppositely charged ions next to each other. ... This is why solid ion compounds form crystals with normal shapes.

How are ion crystals formed?

Ions bound together by electrostatic attraction form ion crystals. ... The plain cubic crystal lattice has ions that are evenly distributed in 3D at 90° angles. The stability of ion solids relies on the lattice energy that is emitted in the form of heat as two ions are brought together to form a solid.

Explanation:

Ion crystals are made up of ions that are electrostatically attracted to one another. Ions in the simple cubic crystal lattice are uniformly dispersed in three dimensions at 90° angles. Ion solids are dependent on the lattice energy, which is released as heat when two ions are brought together to form a solid.

Ionic bonds, also known as electrovalent bonds, are a type of connection created in a chemical molecule by the electrostatic attraction of ions with opposing charges. One atom's valence (outermost) electrons are permanently transferred to another atom to create this type of connection.

Ions (cations) are negatively charged when an atom obtains electrons whereas ions (cations) are positively charged when an atom loses electrons (anion). The compounds created between nonmetals and the alkali and alkaline-earth metals are the greatest examples of ionic, or electrovalent, compounds, which are the outcome of ionic bonding.

The electrostatic forces of attraction between opposing charges and repulsion between comparable charges arrange the ions in these types of ionic crystalline solids so that every positive ion is surrounded by a negative ion, and the converse is true. In other words, because of the way the ions are structured, the positive and negative charges alternate and balance one another, leaving the substance overall with no charge. In ionic crystals, electrostatic forces have a considerable magnitude. These chemicals thus tend to be solid and nonvolatile.

Therefore, ion crystals are made up of electrostatically attracted ions. Ions are uniformly distributed in 3D at 90° angles in the simple cubic crystal lattice. Ion solids rely on the lattice energy that is released as heat when two ions are brought together to form a solid for their stability.

Read more about ionic compounds, here

https://brainly.com/question/9167977

#SPJ2