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4 years ago

Is the planet Uranus surface rocky or flat?

Chemistry

1 answer:

klemol [59]4 years ago

6 0

Uranus is said to be made of fluids. Its atmosphere is its surface

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What is heterogenous mixture

natulia [17]

Answer:

heterogeneous mixture is a mixture that is non-uniform and contains smaller component parts.

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3 years ago

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A car travels 60 km in the first 2 hours and 68 km in the next 2 hours. What is the car’s average speed?

belka [17]

60+68=128
128/2=64
so the answer is 64
I hope this helped

7 0

4 years ago

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What does that number of protons tell you

bogdanovich [222]

The number of protons tells you which element the atom is. The number of protons is the element number (Hydrogen - 1, Helium - 2, etc.).

5 0

3 years ago

Cyanogen is a gas which contains 46.2% C and 53.8% N by mass. At a temperature of 25°C and a pressure of 750 mm Hg, 1.50 g of cy

sergiy2304 [10]

Answer:

Molecular formula of cyanogen is C₂N₂

Explanation:

We apply the ideal gases law to find out the mole of cyanogen

P . V = n. R. T

Firstly let's convert the pressure in atm, for R

750 mmHg = 0.986 atm

25°C + 273 = 298K

0.986 atm . 0.714L = n . 0.082 L.atm/mol.K .298K

(0.986 atm . 0.714L) / (0.082 L.atm/mol.K .298K) = n

0.0288 mol = n

Molar mass of cyanogen = mass / mol

1.50 g /0.0288 mol = 52.02 g/m

Let's apply the percent, to know the quantity of atoms

100 g of compound contain 46.2 g of C and 53.8 g of N

52.02 g of compound contain:

(52.02 . 46.2) / 100 = 24 g → 2 atoms of C

(52.02 . 53.8) / 100 = .28 g → 2 atoms of N

3 0

3 years ago

There are 3.0 g of NO and 3.0 g of CO reacting. what is the limiting reactant ?

xxTIMURxx [149]

Answer:

NO will be the limiting reagent.

Explanation:

The balanced equation is:

2 NO + 2 CO → N₂ + 2 CO₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

NO: 2 moles
CO: 2 moles
N₂: 1 mole
CO₂: 2 moles

Being the molar mass of each compound:

NO: 30 g/mole
CO: 28 g/mole
N₂: 28 g/mole
CO₂: 44 g/mole

Then by stoichiometry the following quantities of mass participate in each reaction:

NO: 2 moles* 30 g/mole= 60 g
CO: 2 moles* 28 g/mole= 56 g
N₂: 1 mole* 28 g/mole= 28 g
CO₂: 2 moles* 44 g/mole= 88 g

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, you can use a simple rule of three as follows: If 56 grams of CO react with 60 grams of NO, 3 grams of CO react with how much mass of NO?

$mass of NO=\frac{3 grams of CO*60 grams of NO}{56 grams of CO}$

mass of NO= 3.21 grams

But 3.21 grams of NO are not available, 3 grams are available. Since you have less moles than you need to react with 3 grams of CO, NO will be the limiting reagent.

4 0

3 years ago