Identify two sources of heat that melt rocks beneath Earth's surface.

Answer:

well it depends are they carnivors or eating soup or are they sucking on co2

Explanation:

all of them have a good day

Answer: the answer is selecting all three ( solids, liquids, gasses) (elements, compounds, and mixtures) (living things, and nonlinear things)

Explanation: I got it right:)

Answer:is D.the wave theory of light

Explanation:

cuz i got it wrong :( but the answer is correct :3

Answer:

D) wave theory of light

Explanation:

Answer:

It's not correct. For balancing, we need to put the coefficients in the molecule, not in the athom. Because if you do this, you're creating another molecule, instead of a balacing, for which the reaction may not happen - but anyway, it would be another reaction.

The correct balacing is:

2NaOH + 1H2S → 1Na2S + 2H2O

Explanation:

Look: Na2OH does not even exist. OH has only one free link, so he can't - in normal conditions - make another one with any athom. That's why we should write 2NaOH instead of Na2OH. The first means "2 mols of NaOH".

Answer:

0.0389757845886336

Explanation:

Answer:

Boiling point, temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapour of the liquid; under this condition, addition of heat results in the transformation of the liquid into its vapour without raising the temperature. Water at its boiling point.

Explanation:

g00gle worls

Answer:

It's A because its almost like a personality its just a sexuallity / gender

Answer:

half of its genetic material from each parent.

Explanation:

Answer:

plants can grow in between rocks and break apart into smaller pieces

Explanation:

Answer:

if the density is higher than water than the object will sink

Explanation:

Answer:

SnO₂

Explanation:

the chemial formula for stannic oxide is SnO₂

Answer:

ionic bond

Explanation:

Answer:

Explanation:

Nickel is the only metal listed. Metal elements have metallic bonds between the metal atoms. Positive metal ions in a sea of electrons.

Metals are electron rich and they contains positive immersed in sea of of mobile electrons. Hence, option c the metal calcium is correct.

Metals are electropositive elements. they classified into s-block and d -block of periodic elements. he first group elements are called alkali metal and the second group elements are alkalie earth metals.

d-block elements are called transition metals. All these elements are rich in electrons and they can easily donate their electron to non metals forming positively charged ions called as cations.

Metallic atoms have highly ordered crystalline structure. Their metal lattice contains ions and electrons holded by strong metallic bonds and some electrons are delocalized into interstices.

Hence, it is said that they consists of  positive ions immersed in a sea of mobile electrons. And the option c calcium metal is correct. Calcium is an alkaline earth metal.

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Your question is incomplete, but your complete question probably was:

A.

Sulfur

B.

Nitrogen

C.

Calcium

D.

Chlorine

Answer:

24.47 L

Explanation:

Using the general gas law equation:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = 0.0821 Latm/molK

T = temperature (K)

According to the provided information in this question,

P = 1.0 atm

V = ?

n = 1 mol

T = 25°C = 25 + 273 = 298K

Using PV = nRT

V = nRT ÷ P

V = 1 × 0.0821 × 298 ÷ 1

V = 24.465 ÷ 1

V = 24.465

V = 24.47 L

Answer:

it can show it using the B method am i right

Answer:

v is the wave speed in metres per second, m/s. f is the frequency in hertz, Hz. λ (lambda) is the wavelength in metres

Answer:

a

Explanation:

It increases the reaction rate by lowering the activation energy for a reaction

Answer:

Explanation:

The following equation describes the oxidation of ethanol to aceticacid by potassium permanganate:

3C2H5OH +4KMnO4-->3HC2H3O2 +4MnO2 + 4KOH + H2O

5.0 g of ethanol and an excess of aqueous KMnO4 arereacted, and 5.9 g HC2H3O2 result.What is the percent yield?

a. 100%

b. 91%

c. 67%

d. 30%

e. 5.9 g HC2H3O2 is impossible since it represcents more than a100% yield.

The percent yield of acetic acid is 91.9%

From the question,

We are to determine the percent yield of the acetic acid

To determine the percent yield of the acetic acid, we will calculate the theoretical yield first.

The balanced chemical equation for the reaction is

3C₂H₅OH + 4KMnO₄ → 3HC₂H₃O₂ + 4MnO₂ + 4KOH + H₂O

This means

3 moles of ethanol reacts with 4 moles of potassium permanganate to produce 3 moles of acetic acid

Now, we will determine the number of moles of ethanol that reacted

From the question

Mass of ethanol that reacted = 5.00 g

Molar mass of ethanol = 46.07 g/mol

Using the formula

[tex]Number\ of\ moles= \frac{Mass}{Molar\ mass}[/tex]

∴ Number of moles of ethanol = [tex]\frac{5.00}{46.07}[/tex]

Number of moles of ethanol that reacted = 0.10853 mole

Now,

From the balanced chemical equation,

3 moles of ethanol reacts with 4 moles of potassium permanganate to produce 3 moles of acetic acid

Then,

0.10853 mole of ethanol reacts with the excess potassium permanganate to produce 0.10853 mole of acetic acid

∴ 0.10853 mole of acetic acid will be produced

Now, for the mass of acetic acid that would be produced

From the formula

Mass = Number of moles × Molar mass

From the question

Molar mass of acetic acid = 60.05 g/mol

∴ Mass of acetic acid that will be produced = 0.10853 × 60.05

Mass of acetic acid that will be produced = 6.5172 g

This is the theoretical yield of acetic acid

Now, for the percent yield

[tex]Percent\ yield = \frac{Actual\ yield}{Theoretical\ yield} \times 100\%[/tex]

From the question,

Actual yield = 5.99 g

∴ [tex]Percent\ yield = \frac{5.99}{6.5172} \times 100\%[/tex]

[tex]Percent\ yield = \frac{599}{6.5172} \%[/tex]

Percent yield = 91.9106 %

Percent yield ≅ 91.9%

Hence, the percent yield of acetic acid is 91.9%

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Answer:

D because it is in a fixed position

Answer:

D is a producer....................

Answer:

D

Explanation:

the trees produce lots of things like air and helps animals and the economy which is producing

Answer:

yes, it is a magnetic material

it can be attracted by a magnet

hope it helps

Answer:

yes ut is magnetic because it is metals

Answer:

5 g/cm3

Explanation:

Density = mass/volume

density = 15g / 3 cm3 = 5g/cm3

Answer:

3.34 g/cm3

Explanation:

Answer:

C

Explanation:

Alcoholism is the inability to control drinking due to both a physical and emotional dependence on alcohol.

Answer:

2.9 * 10^23 atoms Au

Explanation:

(95 g Au) * (1 mol Au/196.96657) * (6.02 * 10^23 atoms Au / 1 Mol Au)

2.9 * 10^23 atoms Au

Explanation:

Answer:

4.64 × 10⁻²¹ J/s

Explanation:

[Only if the wave travels at the speed of light]

Because a wave presumed to be at light speed is a photon, E = hf.

If frequency is not given, E = hc/λ

c is the speed of light in meters per second. c = 299, 792, 458 m/s.

λ is the wavelength which is dependent.

h or plancks constant = 6.62607004 × 10⁻³² m² kg / s.

E is in units of J / s or jules ( m² kg ) per second.

If the wave has a frequency of 7.0 x 10¹² Hz or 7 THz (Tera-Hertz).

E = (6.62607004 × 10⁻³⁴) × (7.0 × 10¹²) =

46.38249028 × 10⁻²² =

4.638249028 × 10⁻²¹ J/s ≈

4.64 × 10⁻²¹ J/s

Answer:

V = 4/3 * 3.1416 * (37x10-10)3

V = 2.12x10-25 cm3

d = m/V

d = 1.67x10-24 / 2.12x10-25 = 7.87 g/cm3

The difference in temperature, let's convert F to ºC:

ºC = -80-32/1.8 = -62.22 ºC

dT = -92.6 + 62.2 = -30.4 ºC

The number of hydrogen atoms lined up side to side to make 1.00 inch is equal to 3.43 × 10⁷ atoms when the radius of one H-atom is 37 pm.

The atomic radius of a hydrogen atom is the distance between the center of the nucleus to the boundary of the electron that surrounds it.

Given, the radius of the hydrogen atom = 37pm

Then the diameter of the hydrogen atom = 37 + 37 = 74 pm

We know that 1 pm = 10⁻¹¹ m

Then the diameter of the one H - atom =  74 × 10⁻¹¹ m

The value of 1 m = 100 cm then the diameter of H-atom =  74 × 10⁻⁹ cm

As we know, the value of one inch = 2.52 cm

So, if 74 × 10⁻⁹ cm length takes H-atom = 1

Then, 2.52 cm would take hydrogen atoms = 2.52/  74 × 10⁻⁹ = 3.43 × 10⁷

Therefore, 3.43 × 10⁷ hydrogen atoms lined up side to side to make 1.00 inch.

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Explanation:

cells, dna, chromosomes, body systems

Answer:

Two objects are in thermal equilibrium if they are in close contact that allows either to gain energy from the other.

Answer: The Objects have the same temperature

Explanation: i just took the test

Answer:

Sn (Tin)

Explanation:

Answer:

let Leo's speed = x mile/hr

so Ethan speed = (x + 6) miles per hour

Distance = Speed × Time

so distance traveled by Leo in 2 hours = x × 2 = 2x

and distance traveled by Ethan in 1.5 hours = 1.5( x + 6 ) = 1.5x + 9

since  they meet on the path , After Ethan has ridden 1.5 hours and Leo has ridden 2 hours , so together the have traveled on complete path that is 65 miles.

⇒  distance traveled by leo in 2 hours + distance traveled by Ethan in 1.5 hours = 65

⇒  2x + 1.5x + 9 = 65

⇒ 3.5x = 56

⇒ x = 16

Hence Leo's speed = x miles/hr = 16 miles/hour

and Ethan's speed = (x + 6) miles/hr = 16 +6 = 22 mile/hour

Explanation:

sorry if this isnt the one im think of