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2 years ago

14

Draw the electron dot structure for the hydrogen carbonate ion hco3-. Carbon is the central atom, and hydrogen is attached to ox

ygen in this polyatomic anion.

1 answer:

Anna11 [10]2 years ago

5 0

Explanation:

this is your answer hope it will help you

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Need help please ASAP

Mashutka [201]

Newton's first law of motion predicts the behavior of objects where all existing forces are balanced. Objects at equilibrium will not accelerate. Also, an object will only accelerate if there is a net or unbalanced force acting upon it. The presence of an unbalanced force will accelerate an object - changing its speed, its direction, or both its speed and direction.

Newton's second law of motion: behavior of objects for and all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.

8 0

3 years ago

A weather balloon is filled with helium that occupies a volume of 500 L at 0.995 atm and 32.0 ℃. After it is released, it rises

Yuki888 [10]

Answer : The volume of the balloon at the new location is, 591.3 L

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 0.995 atm

$P_2$ = final pressure of gas = 0.720 atm

$V_1$ = initial volume of gas = 500 L

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $32.0^oC=273+32=305K$

$T_2$ = final temperature of gas = $-12^oC=273+(-12)=261K$

Now put all the given values in the above equation, we get:

$\frac{0.995atm\times 500L}{305K}=\frac{0.720atm\times V_2}{261K}$

$V_2=591.3L$

Therefore, the volume of the balloon at the new location is, 591.3 L

3 0

4 years ago

Identify the element in Period 3 of the Periodic Table that reacts with oxygen to form an ionic compound represented by the form

Vikki [24]

The metal compound in period 3 is a group 1 metal - Na.

the compound is Na2O, the base annyhdride of NaOH :)

8 0

3 years ago

Read 2 more answers

Calculate the volume of .5 molecsample of gas at 140 k and a pressure of 1.2 atm

nlexa [21]

582 ml is the volume of gas.

Answer:

Explanation:

Using the ideal law of gases, the kinetic theory of gas can be stated as

PV = nRT

Here P is the pressure and it is given as 1.2 atm, V is the volume, which we need to find. Then R is the gas constant and T is the temperature while n is the concentration present.

As per the give question, P = 1.2 atm, T = 140 K and n = 0.5 moles, R = 8.314

V = $\frac{nRT}{P}$

V = $\frac{(0.5*8.314*140}{1.2}= 582 l.$

So 582 ml is the volume of gas.

6 0

3 years ago

Type the correct answer in each box.

krok68 [10]

Answer:

2KI → 2K + I₂

Explanation:

(not my definition, but form a trustworthy source)

The definition of a decomposition reaction is:

a chemical reaction in which one reactant breaks down into two or more products.

In this case, potassium iodide will decompose into potassium and iodine.

2KI → 2K + 2I

2 Potassium and 2 Iodine on both sides, so equation is balanced.

Or, it can be written as 2KI → 2K + I₂

8 0

2 years ago