1. What net ionic equation describes the reaction between Pb(NO3)2( aq) and N a2CO3( aq) ?
O 2Na t( aq) + N0, 2( aq) → 2NaNO3( s)
O Pb 2+( aq) + 2Na t( aq) → 2NaPb( s)
O Pb 2+( aq) + CO3( aq) → PBCO3( s)
O 2Na t( aq) + CO3 2( aq) → NacO3( s)

Answer:

P.E = 3.675  J

Explanation:

Given data:

Height of table = 0.75 m

Mass of book = 0.5 kg

Potential energy = ?

Solution:

Formula:

P.E = mgh

g =acceleration due to gravity =  9.8 m/s²

by putting values,

P.E = 0.5 kg× 9.8 m/s² ×0.75 m

P.E  = 3.675 kgm²/s²

J = kgm²/s²

P.E = 3.675  J

Answer:

[tex]\boxed {\boxed {\sf 3.675 \ Joules}}[/tex]

Explanation:

Gravitational potential energy can be found using the following formula.

[tex]E_p=m*g*h[/tex]

Where m is the mass, g is the gravitational acceleration, and h is the height.

The mass of the book is 0.5 kilograms. The acceleration due to gravity on Earth is 9.8 m/s². The height of the book is 0.75 meters.

[tex]m= 0.5 \ kg \\g= 9.8 \ m/s^2 \\h= 0.75 \ m[/tex]

Substitute the values into the formula.

[tex]E_p=(0.5 \ kg)(9.8 \ m/s^2)(0.75 \ m)[/tex]

Multiply.

[tex]E_p=(4.9 \ kg*m/s^2)(0.75 \ m)[/tex]

[tex]E_p=(4.9 \ N)(0.75 \ m)[/tex]

[tex]E_p=3.675 \ N*m[/tex]

[tex]E_p=3.675 \ J[/tex]

The book has 3.675 Joules of gravitational potential energy.

Answer:

D. water

Answer:

like so true just brush your teeth... if you can't afford it then no disrespect to you

Explanation:

Answer:

their fault when the grow up and have yellow teeth + dentures and they are like 28 XD  

Explanation:

Answer:

[tex]3.35*10^{23}\ SrCrO_4\ molecules[/tex]

Explanation:

[tex]We\ are\ given\ that,\\No.\ of\ moles\ of\ SrCrO_4=0.556\\Hence,\\As\ we\ know\ that,\\No.\ of\ particles=Avagadro's\ Constant*No.\ of\ moles\\We\ already\ know\ that\ Avagadro's\ Constant=6.022*10^{23}\\Here,\\No.\ of\ SrCrO_4\ molecules= 6.022*10^{23}*0.556\\Hence,\\No.\ of\ SrCrO_4\ molecules=3.348*10^{23} molecules\ \approx 3.35*10^{23}\ SrCrO_4\ molecules[/tex]

Answer:

0.514 L (liters)

Explanation:

Answer:

Origin

Explanation:

Answer:

The answer is : D. Wind energy

Answer:

ca ater pillar

Explanation:

there cute little fuzzy guys and they're amazing and beautiful

Answer:

6 atoms of oxygen

Explanation:

Answer:

Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties. Major periodic trends include: electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character. Periodic trends, arising from the arrangement of the periodic table, provide chemists with an invaluable tool to quickly predict an element's properties. These trends exist because of the similar atomic structure of the elements within their respective group families or periods, and because of the periodic nature of the elements.

Answer:

CMoO3 - PubChem.

Explanation:

Answer:

112.18 g.

Explanation:

you're using stoichiometry to find the mass of the compound S₃O.

Answer:

True or False

Answer - True

Explanation:

The mantle convection clearly describes how the mantle moves, transferring heat from the white-hot core to the lithosphere. The mantle is usually being heated below and the cooling happens above and the general temperature of the area gets dropped over a long period of time.  

Hot buoyant Magma is being transferred through convection currents, to the lithosphere at the plate boundaries and hot spots. Also, convection current moves cooler materials from the crust to the interior of the earth through a process that is widely known as subduction.

Answer:

radians

Explanation:

Answer:

Meters per second.

Explanation:

Ap3x approved

Answer:

0.5L

Explanation:

1L = 1000 ml

0.5L

Answer: 0.5

Explanation:

Answer:

they identify factors that affect chemical processes then they determine the amount of substance produced or consumed then predict the amount of energy released or absorbed

Answer:

all you need if yo look up and say do plants grow without soil but yes they can grow without soil but they cannot grow without the necessities that soil provides.

Explanation:

Fnet = ma

m = Fnet/a = 42,000N/(60m/s²) = 700kg.

Answer:

B. Na

Explanation:

Once balanced you get 2Na + Cl₂ ⇒ 2NaCl. Sodium is the limiting reagent because it would produce the smallest amount of the product (NaCl)–while chlorine is the excess reagent. Based off of the Na in the balanced equation, it would produce 3 moles of NaCl, and for Cl₂ it would produce an excess of 6 moles of NaCl. [It'd be wise to utilize stoichiometric factors to get a good grasp of this]

Answer:

5m/s

Explanation:

2s ÷ 2 = s

10m ÷ 2 = 5m

5 meters per second or 5m/s

The total weight of both objects : 7.035 x 10⁻⁸ kg

Given

The weight of a grain of sand : 3.5 x 10⁻¹⁰ kg

The weight of one hair from his eyebrow : 7 x 10⁻⁸ kg

Required

The total weight of both objects

Solution

Scientific Notation consists of 2 parts  

1. the first part: the first digit followed by the decimal point  

2. The second part: the power of 10 (the exponents).which shows the number of digits after the decimal point  

To add/subtract, the exponents must be the same and then add/subtract the coefficient

7 x 10⁻⁸ = 700 x 10⁻¹⁰

[tex]\tt =(3.5+700)\times 10^{-10}\\\\=703.5\times 10^{-10}\\\\=7.035\times 10^{-8}[/tex]

Answer:

in other words its: d

Explanation:

Answer:

2AgNO₃ + MgCl₂ ⇒ 2AgCl + Mg(NO₃)₂

Explanation:

Match both sides of the equation. practice practice

Global Warming

Explanation:

The melting of the polar ice caps due to mostly negative human interactions with the environment.

Answer:

Nuestra alimentacion debe estar basada en alimentos ricos en vitaminas, minerales como las frutas verduras, legumbres  y semillas.

Explanation:

Los alimentos ultraprocesados son altos en sodio, conservantes, y pobres en vitaminas, es por eso que deben ser evitados ya que algunos hasta se consideran hasta carcinogenos.

No se descarta los compuestos quimicos ultraprocesados ricos en grasa perjudiciales para la salud ya que fomentan la formacion de placa de ateromas.

Answer:

See explanation

Explanation:

The essence of chemical bonding is in order to attain minimum energy. The minimum energy state is the most stable state of a chemical system.

As the distance of separation between atoms decreases, the potential energy of the system decreases accordingly.

An optimum distance is reached when the two atoms attain the lowest potential energy. This is designated as the bond distance of the two atoms.

Hence two atoms have lower potential energy when bonded than when separated at large distance.

When two atoms are chemically bonded they have Lower potential energies while when they are separated they have higher potential energies

The potential energies of atoms chemically bonded is directly proportional to the distance between the atoms ( i.e as the distance between atoms decrease the potential energies of the atoms decreases accordingly)  and this enables chemically bonded atoms to attain a more stable state.

The lower the potential energy of bonded atoms the more stable the element/compound  becomes therefore it is necessary that bonded atoms attain the least possible potential energy.

Hence we can conclude that When two atoms are chemically bonded they have Lower potential energies while when they are separated they have higher potential energies .

Learn more : https://brainly.com/question/17637022

Answer:

Balanced.

Explanation:

Both sides are pulling with equal force.

Answer/Explanation:

These forces are balanced. In order for forces to be balanced they must be pulling/pushing the same amount of net force in opposing directions.

In order for forces to be balanced they must be pulling/pushing in opposing directions but with differentiating net force.

all the elements in group 18 are Nobel gases or inert gases . all the elements such as neon , helium, argon etc. ,their outermost shell is completely filled . The noble gases have the largest ionization energies, reflecting their chemical inertness