Reaction type for this equation
2 AgNO3 + Cu → Cu(NO3)2 + 2 Ag

Answer:

4.22 × 10 ⁻²² mol

Explanation:

Given data:

Number of molecules of bromine = 254 molecules

Number of moles = ?

Solution:

1 mole = 6.02 × 10 ²³ molecules

254 molecules × 1  mol / 6.02 × 10 ²³ molecules

42.2 × 10 ⁻²³ mol

4.22 × 10 ⁻²² mol

Answer:

An ocean current is a continuous, directed movement of seawater generated by forces acting upon this mean flow, such as breaking waves, wind, the Coriolis effect, cabbeling, and temperature and salinity differences. Features like depth contours, shoreline configurations, and interactions with other currents also influence an ocean current’s direction and strength. Ocean currents flow for great distances, and together, create the global conveyor belt that plays a dominant role in determining the climate of many of the Earth’s regions (illustrated in the NASA video below). For example, the Gulf Stream makes northwest Europe much more temperate than any other region at the same latitude. Another example is Lima, Peru where the climate is cooler than the tropical latitudes in which the area is located, due to the effect of the Humboldt Current.  Ocean modelling uses a mathematical model of the general circulation of an ocean, based on the Navier–Stokes equations on a rotating sphere with thermodynamic terms for various energy sources (radiation, latent heat). These equations are the basis for complex computer programs commonly used for simulating the atmosphere or ocean of the Earth.

Explanation:

Answer:

Explanation:

Correct order is as follows .

1 ) Determine the moles of each reactant present by dividing its mass by its molar mass

2 ) Determine the amount of product that could be formed from each reactant using the appropriate mole ratios.

3 ) Identify the limiting reactant as the reactant that produces the least amount of product.

4 )  To find the mass, multiply the number of moles of product formed (from the limiting reactant) by the molar mass of the product.

Answer: 334.6 moles of O, 167.3 moles as O2

Explanation:

20.15x10^25/6.02214076x10^23 = 334.6 as atoms, 167.3 as O2

Answer:

1.12M

Explanation:

Given parameters:

Volume of solution  = 2.5L

Mass of Calcium phosphate  = 600g

Unknown:

Concentration  = ?

Solution:

Concentration is the number of moles of solute in a particular solution.

Now, we find the number of moles of the calcium phosphate from the given mass;

        Formula of calcium phosphate  = Ca₃PO₄

         molar mass = 3(40) + 31 + 4(16) = 215g/mol  

Number of moles of  Ca₃PO₄  = [tex]\frac{600}{215}[/tex]   = 2.79moles

   Now;

  Concentration  = [tex]\frac{Number of moles }{volume }[/tex]  

 Concentration  = [tex]\frac{2.79}{2.5}[/tex]   = 1.12M

Answer:

Cr

Mn⁺¹

Fe⁺²

Explanation:

Answer:

the force exerted by air on a moving object is called Air Resistance

Answer:

neon sulfur iodine xenon

Answer:

63.1 seconds.

Explanation:

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In this case, since the average adult heart pumps 84.0 mL/s of blood, it means 84.0 mL each second, as we have 5300. mL, the following mathematical set up help us to compute the required time:

[tex]t=5300.mL*\frac{1s}{84.mL}\\\\t=63.1s[/tex]

Which is about 1.05 min.

Best regards!

Answer:

A = Metallic Bond

B = Strong bonding, strong conductor, high melting and boiling points

Explanation:

Since the bond is between two metals (located in groups 11 and 12), they would experience metallic bonding. Metallically bonded molecules have high melting and boiling points due to the strength of the metallic bond. They also experience strong electrical current due to the there delocalized electrons.

Answer:

A=metallic

B= conducts electricity as a solid

C=covalent

D=does not conduct electricity

Explanation:

got it correct on edge 2022

Answer:

communicate verbally and maintain structure

Answer:

A hot air balloon uses a burner to heat up the air inside the balloon. The burner is usually fueled by liquid propane. The burner mixes the fuel with air and ignites the mixture, which creates a flame directly underneath the bottom opening of the hot air balloon.  Once the air inside the balloon begins to get warm, the balloon will rise. The pilot controls the balloon’s altitude by releasing hot air from a vent at the top of the balloon, releasing the warmer air causes the balloon to descend.

Explanation:

Answer:

to increase enthalpy

Explanation:

Answer:

An endothermic process is any process with an increase in the enthalpy H (or internal energy U) of the system. In such a process, a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system. It may be a chemical process, such as dissolving ammonium nitrate in water, or a physical process, such as the melting of ice cubes.

Answer:

d = 2.57456 g/cm³

Explanation:

Given data:

Length of metal bar = 853cm

Width = 24 cm

Height = 10 cm

Mass = 527064 g

Density of metal = ?

Solution:

Volume of metal bar:

Volume = length × width × height

Volume = 853 cm × 24 cm × 10 cm

Volume = 204720 cm³

Density:

d = m/v

d = 527064 g / 204720 cm³

d = 2.57456 g/cm³

Answer:

Explanation:

H₃O⁺ and H₂O .

H₂O + H⁺  ⇄   H₃O⁺

H₂O accepts proton to form H₃O⁺ so H₂O is base .

H₃O⁺  ⇄   H₂O + H⁺

Here H₃O⁺  is acid because it gives proton ( H⁺ ) .

HCO₃ ⁻ and H₂CO₃

H₂CO₃  ⇄   HCO₃ ⁻ + H⁺

H₂CO₃ is acid because it gives proton ( H⁺ )

HCO₃ ⁻ + H⁺ = H₂CO₃

HCO₃ ⁻  is base because it accepts proton .

Answer:

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b. it's b

Explanation:

b

Answer:

Number of moles = 0.87 mol

Explanation:

Given data:

Mass of calcium = 34.8 g

Number of moles = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of calcium = 40 g/mol

By putting values,

Number of moles = 34.8 g/ 40 g/mol

Number of moles = 0.87 mol

Explanation:

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iron Bars form a solenoid when wrapped in a coil by a current carrying copper conducting wire .

copper coils generate a magnetic field when a current is passed through the coil . according to the helmholtz law.

Answer:

602214085700000000000000

Explanation:

The scientific notation form for the avogadro constant is given as;

6.022140857 × 10^23

The standard form with a lot of zeros is given as;

602214085700000000000000

Answer: The smallest bond angle in the molecule x-y-x is [tex]180^0[/tex]

Explanation:

According to VSEPR theory , each atom in a molecule will achieve a geometry that minimizes the repulsion between electrons in the valence shell of that atom.

In the given compound [tex]x-y-x[/tex], the number of electron pairs is 2 that means the hybridization will be [tex]sp^2[/tex]  and geometry of the molecule will be linear as there are two bond pairs .The bond angle for linear geometry is 180° which reduces the electron electron repulsions and maximise stability.

Answer:

5.7997

Explanation:

Answer:

In each Amplify Science unit, students figure out

a phenomenon by asking questions, gathering

evidence, and coming up with an explanation of how

the phenomenon works. The Coherence Flowchart

visually represents the storyline of the unit, showing

the coherent flow of questions, evidence, and ideas that

support students as they build complex explanations

of the unit’s anchor phenomenon. The Coherence

Flowchart on the following pages (one chapter per

page) can be used to see the connections between

the questions that drive students’ experiences, the

evidence they gather, the ideas they figure out, and the

new questions that those ideas generate. The diagram

to the right explains the structure of a chapter in the

Explanation:

Answer:

250J

Explanation:

Given parameters:

Spring constant  = 500N/m

Extension  = 1m

Unknown:

Elastic potential energy  = ?

Solution:

The elastic potential energy of a body is the energy stored within an elastic string.

  EPE  = [tex]\frac{1}{2}[/tex] k e²

k is the spring constant

e is the extension

 Now;

      EPE  =  [tex]\frac{1}{2}[/tex]  x 500 x 1²   = 250J