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leonid [27]
2 years ago
5

Help me ASAP please??

Chemistry
2 answers:
kirill [66]2 years ago
3 0

Answer:

B 2Li + Cl2 ---> 2LiCl

Explanation:

There are 2 Li atoms and 2 Cl atoms on both sides of the equation.

Afina-wow [57]2 years ago
3 0

To see if mass has been conserved during a chemical reaction you must look that there is the same amount of each element on both sides.  

Let's look at option A

S_{8} + F_{2} → SF_{6}

We start off with 8 Sulfurs and 2 Florine. This means that we must end up with 8 Sulfurs and 2 Florine  As you can see this is not the case. We only have 1 Sulfur and 6 Florine. This means this chemical reaction is not balanced and does not show conservation of mass.

Let's look at option B

2Li + Cl_{2} → 2LiCl

We start off with 2 Li and 2 Cl. This means that we must, again end up with 2 Li and 2 Cl. As we can see this is the case! This equation is balanced and shows conservation of mass. This is you answer!!!

I only did the work up until the answer (B.). Let me know if you need me to explain why C. and D aren't the answer.

~Just a girl in love with Shawn Mendes

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How many grams of carbon are in 6.32 moles?
Anit [1.1K]

Answer:

17.18 moles of NaCl are in 2,719 mL of a 6.32

Explanation:

7 0
3 years ago
What is the pH of a substance that has a hydrogen ion concentration of<br> 8.8x10^(-5) M? *
stealth61 [152]

Answer:

The pH of the substance is 4,06.

Explanation:

The pH indicates the acidity or basicity of a substance. PH values between 0 and less than 7 indicate acidic solutions, 7 neutral and greater than 7 to 14 basic. It is calculated as:

pH = -log (H +)

pH= -log (8.8x10^-5)

<em>pH=4,06</em>

5 0
3 years ago
Carbon dioxide (CO2) is the gas that is mainly responsible for global warming (the greenhouse effect). The burning of fossil fue
Nesterboy [21]

Answer:

1.7\cdot 10^{15} g

Explanation:

Glucose reacts with oxygen do produce carbon dioxide and water:

C_6H_12O_6 (s) + 6 O_2 (g)\rightarrow 6 CO_2 (g) + 6 H_2O (l)

Given a daily mass of glucose:

m_1 = 5.0\cdot 10^2 g

Find moles of glucose:

n_1 = {5.0\cdot 10^2 g}{180.156 g/mol} = 2.775 mol

From stoichiometry of this equation, moles of carbon dioxide can be found by multiplying this amount by 6:

n_2 = 2.775 mol\cdot 6=16.65 mol

Convert this into mass using the molar mass of carbon dioxide:

m_2 = 16.65 mol\cdot 44.01 g/mol = 732.8 g

This is the mass of carbon dioxide per person per day. Multiply by the population and by the number of days to get the total mass:

732.8 \frac{g}{person\cdot day}\cdot 365 days\cdot 6.5\cdot 10^9 people = 1.7\cdot 10^{15} g

5 0
2 years ago
How many moles of chlorine gas would occupy a volume of 35.5 L at a pressure of 100.0 kPa and a temperature of 100.0 degrees Cel
o-na [289]

1.137448506 mol moles of chlorine gas would occupy a volume of 35.5 L at a pressure of 100.0 kPa and a temperature of 100.0 degrees Celsius.

<h3>What is an ideal gas equation?</h3>

The ideal gas equation, pV = nRT, is an equation used to calculate either the pressure, volume, temperature or number of moles of a gas. The terms are: p = pressure, in pascals (Pa). V = volume, in m^3.

We apply the formula of the ideal gases, we clear n (number of moles); we use the ideal gas constant R = 0.082 l atm / K mol:

PV= nRT

Given data:

P=100.0 kPa =0.986923 atm

T=100 degree celcius= 100 + 273 =373 K

V=35.5 L

Substituting the values in the equation.

n= \frac{\;0,98 \;atm \;X \;35,5 \;L }{\;0,082\;atm / \;K mol \;X \;373 K}

n= 1.137448506 mol

Hence, 1.137448506 mol moles of chlorine gas would occupy a volume of 35.5 L at a pressure of 100.0 kPa and a temperature of 100.0 degrees Celsius.

Learn more about ideal gas here:

brainly.com/question/16552394

#SPJ1

7 0
1 year ago
What is the mass of a 0.23 L substance, if it has density of 1.90 g/mL?
jolli1 [7]

Answer:

437 g

Explanation:

as mass = density × volume

8 0
2 years ago
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