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Ket [755]
2 years ago
7

Where can you change the atom/molecules used in the simulation? Which atoms/molecules are

Chemistry
1 answer:
aivan3 [116]2 years ago
7 0

Answer:

When two or more atoms are chemically joined together, this is called a molecule. In some cases, such as hydrogen and oxygen, the molecule is made entirely of the same atom, such as hydrogen gas (a molecule) is made entirely of two hydrogen atoms. Here, converting molecules to atoms is as simple as dividing by two.

Atoms can join together - they form bonds together - to make MOLECULES. For example, two atoms of hydrogen hook together to form a molecule of hydrogen

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How many mL of 0.715 M HCl is required to neutralize 1.25 grams of sodium carbonate? (producing carbonic acid)
jonny [76]

Answer:

34 mL

Explanation:

We'll begin by calculating the number of mole in 1.25 g of sodium carbonate, Na₂CO₃. This can be obtained as follow:

Mass of Na₂CO₃ = 1.25 g

Molar mass of Na₂CO₃ = (23×2) + 12 + (16×3)

= 46 + 12 + 48

= 106 g/mol

Mole of Na₂CO₃ =?

Mole = mass /molar mass

Mole of Na₂CO₃ = 1.25 / 106

Mole of Na₂CO₃ = 0.012 mole

Next, we shall determine the number of mole HCl needed to react with 0.012 mole of Na₂CO₃.

The equation for the reaction is given below:

Na₂CO₃ + 2HCl —> H₂CO₃ + 2NaCl

From the balanced equation above,

1 mole of Na₂CO₃ reacted with 2 moles of HCl.

Therefore, 0.012 mole of Na₂CO₃ will react with = 0.012 × 2 = 0.024 mole of HCl.

Next, we shall determine the volume of HCl required for the reaction. This is illustrated:

Mole of HCl = 0.024 mole

Molarity of HCl = 0.715 M

Volume of HCl =?

Molarity = mole /Volume

0.715 = 0.024 / volume of HCl

Cross multiply

0.715 × volume of HCl = 0.024

Divide both side by 0.715

Volume of HCl = 0.024 / 0.715

Volume of HCl = 0.034 L

Finally, we shall convert 0.034 L to mL

This can be obtained as follow:

1 L = 1000 mL

Therefore,

0.034 L = 0.034 L × 1000 mL / 1 L

0.034 L = 34 mL

Therefore, 34 mL of HCl is needed for the reaction.

6 0
2 years ago
1. As you increase speed is there an increase or decrease in Kinetic Energy?
drek231 [11]

\qquad \qquad\huge \underline{\boxed{\sf Answer}}

1. As you increase speed is there an increase or decrease in Kinetic Energy?

\qquad \sf  \dashrightarrow \: increase

2. As you increase mass is there an increase or decrease in Kinetic Energy?

<h3 />

\qquad \sf  \dashrightarrow \: increase

3. As you decrease speed is there an increase or decrease in Kinetic Energy?

\qquad \sf  \dashrightarrow \: decrease

4. As you decrease mass is there an increase or decrease in Kinetic Energy?

\qquad \sf  \dashrightarrow \: decrease

3 0
2 years ago
se the following key to classify each of the elements below in its elemental form: A. Discrete atoms ... C. Metallic lattice B.
Lostsunrise [7]

Explanation:

the correct match can as follows:

1.  helium ⇒ discrete atoms (helium is an inert gas)

2. oxygen ⇒ molecules (oxygen exists in molecular form as O2)

3 Magnesium ⇒ matalic lattice ( Magnesium is a metal FCC crystal Structure :) )

4 Aluminum⇒ covalent network (since it is situated in the middle of the group and posses amphoteric properties too)

4 0
3 years ago
2 CO(g) + O2(g) + 2 CO2(g)<br> What type of reaction is shown above?
sergij07 [2.7K]

Answer:

I'm pretty sure its a combination reaction!!

Explanation:

they generally form between metals and non metals like that^

7 0
3 years ago
Compare and contrast an isotope and a neutral atom.
deff fn [24]

Answer:

Neutral atoms have the same number of electrons and protons. Atoms of an element that contain different numbers of neutrons are called isotopes. Each isotope of a given element has the same atomic number but a different mass number (A), which is the sum of the numbers of protons and neutrons.

Explanation:

6 0
2 years ago
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