Can someone help me with this questions. What do these two photos have in common?

Volume of H2 produced = 57.6576 L

Given

23.17 g Be

Required

Volume of H2

Solution

Reaction

Be(s)+H2O(g)→BeO(s)+H2(g)

mol Be :

= 23.17 g : 9 g/mol

= 2.574

From the equation, mol H2 : mol Be = 1 : 1, so mol H2 = 2.574

Volume H2(assumed at STP, 1 mol=22.4 L) :

= 2.574 x 22.4 L

= 57.6576 L

7. Remains of meteroids that hit down the earth.

8. icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail when it travels close to the sun.

9. silicon, oxygen and at least one metal.

10. They provide information how the Earth obtained liquid water.

11. The resulting cloud would block out sunlight.

12. crater

13. Asteroid Belt

7. A meteorite is remains of meteoroids that hit down the earth.

8. A comet is an icy ball of rock that displays a coma, a fuzzy temporary atmosphere, or a tail when it travels close to the sun.

The term meteoroids is defined as the small rock pieces that revolve around the Sun.They typically consist of gases, ice particles, and dust.

9. The composes silicate are silicon, oxygen and at least one metal.

10.The scientists study comets because they provide information how the Earth obtained liquid water.

11. The global temperature of the Earth drop when struck by a massive

asteroid because the resulting cloud would block out sunlight.

12. When objects strike a surface of a planet, they leave a deep impression on the surface called crater.

13. Meteoroids are formed when asteroids collided and crushed into pieces. Based on this statement, the meteoroids originate in Asteroid Belt.

Thus, A meteorite is remains of meteoroids that hit down the earth.

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Answer:

Gjvb

Explanation:

Using the combined gas law equation as follows:

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (kPa)

P2 = final pressure (kPa)

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

According to this question;

T1 = 300K

T2 = -73 + 273 = 200K

P1 = 303kPa

P2 = 202kPa

V1 = 2L

V2 = ?

Using the above formula:

303 × 2/300 = 202 × V2/200

606/300 = 202V2/200

Cross multiply;

606 × 200 = 300 × 202V2

121200 = 60600V2

V2 = 121200/60600

V2 = 2L

The new volume is 2L

Answer: Its 1.30480167.1029  

Explanation:

Answer:

pOH = -log[OH – ]

pH + pOH = 14

Explanation:

I did not understand the question but hope this help!

The pH of a solution is 8.7 and pOH is 5.3

The sum of pH and pOH is 14.

pH + pOH = 14                  

If pH of a solution is 8.7 then pOH is calculated as,

8.7 + pOH = 14

pOH = 14 - 8.7

pOH = 5.3

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Tectonic forces do not cause plates to slide over and under each other, to produce heat and pressure which forms igneous rocks

The rock cycle is a cycle which describes how the three basic rock types are related and how earth processes convert one rock type into another over geologic time.

Plate tectonic forces together with weathering and erosional processes, are responsible for the rock cycle.

Tectonic forces play the following roles in rock cycle:

Therefore, the statement that when plates slide over and under each other, the heat and pressure form igneous rocks is not True.

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Explanation:

I think your correct it's A!!

Answer:

C im pretty sure. hope this helps

Answer:

The magnitude of the applied force is 3.15 N

Explanation:

Hooke's law states that for small deformations, the change in dimensions, 'x', of an object is directly proportional to the force, 'F', of the acting load acting that bring about the deformation

Mathematically, Hooke's Law can be expressed as follows;

F = k·x

Where;

F = The applied load

k = The force constant of the object

x = The amount of deformation of the object

The given parameters are;

The spring's force constant, k = 12.6 N/m

The amount of stretching in the spring, x = 0.25 m

Therefore, we have;

The force applied, F = k·x = 12.6 N/m × 0.25 m = 3.15 N.

Moles of Helium = 2

Given

12.04 x 10²³ atoms of helium

Required

moles

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

moles Helium :

n = N : No

n = 12.04 x 10²³ : 6.02 x 10²³

n = 2

Answer:

No bcz it is insulator it will not conduct electric

Answer:

Mercury

Explanation: Under standard conditions mercury is a shiny, heavy, silvery liquid. It is the only metal that is liquid at room temperature.

Answer:

Mercury, Venus, earth and mar, Jupiter, Saturn, urines, Neptune.

Explanation:

The vapor pressure (in torr) of a 35°C solution : 52 torr

Given

x propanol = 0.75

P°ethanol=100 torr

P°propanol=36 torr

Required

the vapor pressure

Solution

Raoult's Law

P solution = xA.P°A +xB.P°B

x ethanol = 1- 0.75 = 0.25

Input the value :

P solution = 0.25 x 100 + 0.75 x 36

P solution = 25 + 27

P solution = 52 torr

Answer:

5.00 mol O₂

Explanation:

In order to solve this problem we will need to convert moles of water to moles of oxygen. We will do that using the stoichiometric coefficients, as follows:

Thus 5.00 moles of oxygen would be produced from 10.0 moles of water.

Answer:

You could classify nuclear energy as nonrenewable because uranium and similar fuel sources are finite. On the other hand, some people consider nuclear energy renewable because the element thorium and other new technologies may provide infinite fuel needed to power nuclear reactors.

120 g CO₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[RxN - Balanced] C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

[Given] 150 g O₂

Step 2: Identify Conversions

[RxN] 5 mol O₂ → 3 mol CO₂

[PT] Molar Mass of O - 16.00 g/mol

[PT] Molar Mass of C - 12.01 g/mol

Molar Mass of O₂ - 2(16.00) = 32.00 g/mol

Molar Mass of CO₂ - 12.01 + 2(16.00) = 44.01 g/mol

Step 3: Stoich

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

123.778 g CO₂ ≈ 120 g CO₂

Answer:

the second stage of cell division. its between prophase and anaphase during the chromosomes become attached to spindle fibers.

Answer:

To catch a ball, the fielder has to stop the ball. This means, force is applied against the motion of the ball. So, between the fielder applies force on the ball and the ball comes to rest, the ball moves in the direction opposite to the direction of force. Thus work is negative.

Explanation:

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Answer:

bbbbbbbbbbbbbbbbbbb

Explanation:

Answer:

D as a mixture is not a compound and it does not have it's own chemical formula

Explanation: Sauce me brainliest

It cannot be described by a chemical symbol or formula.

- Chilio

The number of moles of NaCl = 0.103

Given

6 gram sample of NaCl

Required

moles

Solution

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

mole = mass : molar mass

Molar mass of NaCl = 58.5 g/mol

Input the value :

mole = 6 g : 58.5 g/mol

mole = 0.103

Answer:

Argon is a chemical element with the symbol Ar and atomic number 18.

Explanation:

Answer:

Avogadro's number is a very important relationshiptoremember: 1 mole = 6.022×1023 6.022 × 1023atoms, molecules, protons, etc.

...

Explanation:

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Answer:

balanced forces do not affect the motion of the object. Unbalanced forces affect the motion and velocity of an object.

Answer:

Question:

A spring with a spring constant of 30 N/m is stretched 0.2 m from its equilibrium position. How much work must be done to stretch it an additional 0.1 m?

Elastic Potential Energy:

The work that needs to be done by any object is a form of energy. The work can be defined in terms of the work-energy theorem, which states that the work can either be the difference in the kinetic energy of a system or the difference in the potential energy of a system. There is a special type of potential energy reserved exclusively for

Answer:

The elements in this family are fluorine, chlorine, bromine, iodine, and astatine. Halogens have 7 valence electrons, which explains why they are the most active non-metals.

Explanation:

Answer:

Selenium

Explanation: