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2 years ago

What is our solar System inside

Chemistry

2 answers:

olga2289 [7]2 years ago

7 0

Answer:

The milky waY is the answer

Explanation:

AURORKA [14]2 years ago

6 0

Answer:

is it the Milky Way Galaxy

You might be interested in

If 42 grams of carbon and 52 grams of oxygen are used, how many grams of CO2 will be produced (Hint: find the

zavuch27 [327]

Answer:

71.5g

Explanation:

The reaction equation is given as:

C + O₂ → CO₂

Mass of C = 42g

Mass of O₂ = 52g

Unknown:

Mass of CO₂ produced = ?

Solution

Now to solve this problem, we have to find limiting reactant which is the one given in short supply in this reaction.

The extent of the reaction is controlled by this reactant.

Find the number of moles of the given species;

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

Number of moles of C = $\frac{42}{12}$ = 3.5mol

Number of moles of O₂ = $\frac{52}{32}$ = 1.63mol

Now;

From the balanced reaction equation;

1 mole of C reacted with 1 mole of O₂

We see that C is in excess and O₂ is the limiting reactant.

1 mole of O₂ will produce 1 mole of CO₂

So; 1.63mole of O₂ will produce 1.63 mole of CO₂

Mass of CO₂ = number of moles x molar mass

Molar mass of CO₂ = 44g/mol

Mass of CO₂ = 1.63 x 44 = 71.5g

8 0

2 years ago

What is the force needed to accelerate a sled with a mass of 2 kg at a rate of 3.0/s²

frutty [35]

Answer:

<h3>The answer is option A</h3>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

<h3>Force = mass × acceleration</h3>

From the question

mass = 2 kg

acceleration = 3 m/s²

We have

Force = 2 × 3

We have the final answer as

Hope this helps you

7 0

3 years ago

The element in Group 14 Period 4 has how many neutrons and is it a metal, nonmetal, metalloid or noble gas.

monitta

Number of neutrons=41, and it is metalloid

<h3>Further explanation</h3>

Group 14⇒valence electron = 4(ns²np²)

Period 4⇒n=4

So electron configuration of the element :

1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p² = 32 electron=atomic number

The element with atomic number 32, which is in period 4 and group 14 is Ge-Germanium

There are seven elements that can be classified as metalloids, namely boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), and polonium (Po).

While the mass number: 73

So the number of neutrons = mass number-atomic number

$\tt 73-32=41$

8 0

2 years ago

Which of the following prefixes would be best to use when measuring the distance from your home to the store?

Shalnov [3]

I would say the most correct answer is Kilo, as in kilometers. The store would certainly not be milli, or millimeters away from you, would it now? :)

Hope this helps!

4 0

3 years ago

Consider a certain type of nucleus that has a half-life of 32 min. calculate the percent of original sample of nuclides remainin

Irina18 [472]

t1/2 = ln 2 / λ = 0.693 / λ
Where t1/2 is the half life of the element and λ is decay constant.

32 = 0.693 / λ
λ = 0.693 / 32 (1)

Nt = Nο eΛ(-λt) (2)

Where Nt is atoms at t time, λ is decay constant and t is the time taken.
t = 1.9 hours = 1.9 x 60 min

From (1) and (2),

Nt = Nο e⁻Λ(0.693/32)*1.9*60
Nt = 0.085Nο

Percentage = (Nt/Nο) x 100%
= (0.085Nο/Nο) x 100%
= 8.5%

Hence, Percentage of remaining atoms with the original sample is 8.5%

8 0

3 years ago