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3 years ago

10

lanets formed from ____ left over from the formation of the Sun at the center of the cloud. a. gravel c. solar wind b. gas, ice,

and dust d. asteroids

2 answers:

puteri [66]3 years ago

5 0

Answer:The answer is B, gas,ice, and dust :) yw

Explanation:

vodka [1.7K]3 years ago

4 0

Might be solar but I may be wrong

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Acetylene gas C2H2 undergoes combustion to form carbon dioxide and water when it is used in the oxyacetylene torch for welding.

Elenna [48]

Answer:

The answer to your question is below

Explanation:

Reaction

C₂H₂ (g) + O₂(g) ⇒ CO₂ (g) + H₂O (g)

Reactants Elements Reactants

2 C 1

2 H 2

2 O 3

This reaction is unbalance

<u>Reaction balanced</u>

<u> </u><u>2</u><u>C₂H₂ (g) + </u><u>5</u><u>O₂(g) ⇒ </u><u>4</u><u>CO₂ (g) + </u><u>2</u><u>H₂O (g)</u>

Reactants Elements Reactants

4 C 4

4 H 4

10 O 10

Now, the reaction is balanced

a) Calculate the molecular mass of acetylene and water

Acetylene = (12 x 2) + (2) = 26 g

Water = (1 x 2) + (1 x 16) = 18 g

2(26) g of Acetylene --------------- 2(18) g of Water

113 g of Acetylene -------------- x

x = (113 x (2 x 18)) / 2(26)

x = 4068 / 52

<u> </u> x = 78. 2 g of water

b) 2 moles of Acetylene ------------ 4 moles of carbon dioxide

x moles of acetylene ------------ 1.10 moles of carbon dioxide

x = (1.10 x 2) / 4

x = 0.55 moles of acetylene

6 0

3 years ago

Read 2 more answers

How many moles of silver oxide (l) are needed to produce 4 moles of silver?

ozzi

The number of moles of silver oxide (I) needed to produce 4 moles of silver is 2 moles

<h3>Stoichiometry </h3>

From the question, we are to determine the number of moles of silver oxide (I) needed to produce 4 moles of silver

First, we will write the balaced chemical equation for the decomposition of silver oxide (I)

2Ag₂O(s) → 4Ag(s) + O₂(g)

This means, 2 moles of silver oxide (I) [Ag₂O] decomposes to give 4 moles of <u>silver </u>and 1 mole of oxygen gas.

From the <em>balanced chemical equation</em>, it is easy to deduce the number of moles of silver oxide (I) that would give 4 moles of silver.

Hence, the number of moles of silver oxide (I) needed to produce 4 moles of silver is 2 moles

Learn more on Stoichiometry here: brainly.com/question/18834543

7 0

2 years ago

PLEASE HELP!!!!!!!!!

KonstantinChe [14]

Answer:

Option "C" is the correct answer to the following question.

Explanation:

Given:

Pressure in an automobile tire (P) = 1.88 atm

Temperature (K) = 25°C = 273 + 25 = 298 Kelvin

New temperature (K1) = 37°C = 273 + 37 = 310 Kelvin

Find:

New pressure in an automobile tire (P1) = ?

Computation:

$\frac{P}{K}= \frac{P1}{K1} \\\\\frac{1.88}{298}= \frac{P1}{310}\\\\1.9557$

New pressure in an automobile tire (P1) = 1.9557

New pressure in an automobile tire (P1) = 1.96 (Approx)

5 0

3 years ago

PLEASE ANSWER QUESTION 6!!

kap26 [50]

Explanation:

MD: 242 364 7480

Ps: TYSON all can come for talking about

5 0

3 years ago

A cylinder with a moveable piston contains 0.552 mol of gas and has a volume of 259 mL . Part A What will its volume be if an ad

Naddik [55]

Answer:

The new volume will be 367mL

Explanation:

Using PV = nRT

V1 = 259mL = 0.000259L

n1 = 0.552moles

At constant temperature and pressure, the value is

P * 0.000259 = 0.552 * RT ------equation 1

= 0.552 / 0.000259

= 2131.274

V2 = ?

n2 = 0.552 + 0.232

n2 = 0.784mole

Using ideal gas equation,

PV = nRT

P * V2 = 0.784 * RT ---------- equation 2

Combining equations 1 and 2 we have;

V2 = 0.784 / 2131.274

V2 = 0.000367L

V2 = 367mL

7 0

3 years ago