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4 years ago

How to do stoichiometry?

Chemistry

2 answers:

zepelin [54]4 years ago

8 0

Answer:

A good tip to use, search up a picture of a mole map.

Explanation:

When you are going to moles, you divide, when you are going out of moles, you multiply.

siniylev [52]4 years ago

5 0

Almost all stoichiometric problems can be solved in just four simple steps:Balance the equation.Convert units of a given substance to moles.Using the mole ratio, calculate the moles of substance yielded by the reaction.Convert moles of wanted substance to desired units

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A cart accelerates at 2m/s2 when a force of 60 N is applied. What is the mass of the cart? Formula: F=ma

Fudgin [204]

Answer:

Mass, m = 30 kg

Explanation:

We have,

Acceleration of a cart, $a=2\ m/s^2$

Force applied, is 60 N

It is required to find the mass of the cart.

The formula of the force acting on the cart is :

$F=ma$

m is mass of the cart

$m=\dfrac{F}{a}\\\\m=\dfrac{60\ N}{2\ m/s^2}\\\\m=30\ kg$

So, the mass of the cart is 30 kg.

8 0

4 years ago

Look at picture to understand

lesantik [10]

Answer:

i no understand english spanish lease

Explanation:

5 0

3 years ago

Read 2 more answers

What volume of 1.00 m hcl in liters is needed to react completely (with nothing left over) with 0.750 l of 0.100 m na2co3?

kotykmax [81]

The balanced equation for the reaction is as follows
Na₂CO₃ + 2HCl --> 2NaCl + CO₂ + H₂O
stoichiometry of Na₂CO₃ to HCl is 1:2
number of Na₂CO₃ moles reacted = molarity x volume
number of Na₂CO₃ moles = 0.100 mol/L x 0.750 L = 0.0750 mol
according to molar ratio of 1:2
1 mol of Na₂CO₃ reacts with 2 mol of HCl
then 0.0750 mol of Na₂CO₃ mol reacts with - 2 x 0.0750 = 0.150 mol
molarity of given HCl solution is 1.00 mol/L
molarity is defined as the number of moles of solute in 1 L of solution
there are 1.00 mol in 1 L of solution
therefore there are 0.150 mol in - 0.150 mol / 1.00 mol/L = 0.150 L
volume of HCl required is 0.150 L

3 0

3 years ago

The table below lists the properties of a metallic element.

PilotLPTM [1.2K]

Answer:

group 12

Explanation:

5 0

3 years ago

How many electrons are there in 2 g of H2

KiRa [710]

Answer:

6.02 x 10²³ electrons

Explanation:

Given parameters:

Mass of H₂ = 2g

Unknown:

Number of electrons = ?

Solution:

To find the number of electrons, we must determine the number of moles of H₂ first.

Number of moles = $\frac{mass}{molar mass}$

Molar mass of H₂ = 2(1) = 2g/mol

Number of moles = $\frac{2}{2}$ = 1mol

1 mole of a substance contains 6.02 x 10²³ particles

the particles can be protons, neutrons, electrons

So,

2g of H₂ will contain 6.02 x 10²³ electrons.

4 0

3 years ago