575/2000 in ratio please send me photos of this answer ​

Answer:

0.0199moles

Explanation:

The number of miles of a substance can be calculated using the formula:

Number of moles (n) = Mass (M) / Molar mass (MM)

In this question, the mass of Magnesium element (Mg) = 0.478 g while the atomic mass is 24

Therefore, number of moles of Magnesium is:

Moles = 0.478/24

Moles = 0.01992

Hence, 0.0199 moles of Magnesium are contained in 0.478 g of the element.

Answer:

The mass of oxygen gas is 0.96 g.

Explanation:

Given data:

Mass of oxygen gas = ?

Volume of as = 320 mL (320mL × 1L /1000 mL = 0.32 L)

Temperature of gas = 17 °C

Pressure of gas = 2 atm

Solution:

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will convert the temperature.

17+273 = 290 K

Now we will put the values in formula.

2 atm × 0.32 L = n × 0.0821 atm.L/ mol.K   × 290 K

0.64 atm.L =  n × 23.81 atm.L/ mol.

n = 0.64 atm.L / 23.81 atm.L/ mol.

n = 0.03 mol

Mass of oxygen:

Mass = number of moles × molar mass

Mass = 0.03 mol × 32 g/mol

Mass = 0.96 g

The mass of oxygen gas is 0.96 g.

The mass of oxygen will be "0.96 g".

Given:

Volume,

or,

           = 0.32 L

Temperature,

or,

           = 290 K  

Pressure,

General gas constant,

As we know the formula,

→ [tex]PV = nRT[/tex]

By substituting the values, we get

[tex]2\times 0.32=n\times 0.0821\times 290[/tex]

     [tex]0.64=n\times 23.81[/tex]

         [tex]n = \frac{0.64}{23.81}[/tex]

            [tex]= 0.03 \ mol[/tex]

hence,

→ Mass of oxygen = [tex]Number \ of \ moles\times Molar \ mass[/tex]      

                               = [tex]0.03\times 32[/tex]

                               = [tex]0.96 \ g[/tex]

Thus the above answer is right.

Learn more:

https://brainly.com/question/14049502

Sulfur tetra flouride formula is SF4   so there are 3.07 moles of sulfur ATOMS in there.

Answer:

determination or brains

Explanation:

Answer:

bacon

Explanation:

nator

Answer:

1.57

Explanation:

nator

Answer:

Option c) The measurement of how much solute can be dissolved in a liter of solvent.

Explanation:

The concentration of a solution can be defined as the amount of solute in 1 litre of the solvent i.e how much of the solute that can dissolve in a litre of the solvent. Mathematically, it can be written as:

Concentration = mole of solute / Volume of solvent

Thus, the unit for the concentration is mole per litre (mol/L)

From the above illustration, we thus say that the concentration of a solution is a measure of how much solute can be dissolved in a liter of solvent.

Answer: A) Increase the amount of solute.

              C) Decrease the amount of solvent.

Answer:

Particle take 0.11 min to travel 158 m distance.

Explanation:

Given data:

Speed of particle = 1.5 Km/m

Distance to cover = 158 m (158/1000 = 0.158 Km)

Time taken = ?

Solution:

Formula:

s = d/t

s = speed

d = distance

t = time

Now we will put the values in formula.

1.5 Km/m = 0.158 Km / t

t = 0.158 Km /1.5 Km/m

t = 0.11 min

Thus, particle take 0.11 min to travel 158 m distance.

Answer:

d

Explanation:

disolving is a chemical like word and if a limestone cave is forming from the acid in the water thats chemical wheathering!

Answer:

Cave formation from the acid in water dissolving limestone

Explanation:

Answer:

Yes it will

An example is ice, when it melts the volume goes up which means it occupies much more space

The doctor would form a hypothesis based on your symptoms. If you have a cough for instance, then s/he could hypothesize that you have a cold or flu. From that hypothesis, they would gather data in the form of measuring your vitals and so on. Using that data, they would be able to confirm the hypothesis, or reject it in form of some alternative.

Answer:

70

Explanation:

density=mass/volume

therefore mass = density*volume

20*3.5=70

Answer:

21.504 liters

Explanation:

Given: 0.960 mol

Volume: ?

Molar Volume at STP = 22.4 liters

0.960 mol × 22.4 L/ 1 mol =

0.960 × 22.4 L = 21.504 L

Answer:

Ions are formed when atoms lose or gain electrons in order to fulfill the octet rule and have full outer valence electron shells.

Explanation:

When they lose electrons, they become positively charged and are named cations. When they gain electrons, they are negatively charged and are named anions.

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass of metal = 33.7 g

volume = 8.49 mL

So we have

[tex]density = \frac{33.7}{8.49} \\ = 3.969375736...[/tex]

We have the final answer as

Hope this helps you

Answer:

5=C, every action has an equal or opposite reaction,

6=B, since it has less air drag and more force exerted on it

7= You're correct

Answer:

pls complete your question

Answer:iron and carbon

Explanation:I took the test it’s iron and carbon

Answer:

iron and carbon

Explanation:

did the assignment on edg lmk if u need help on the assignment

Answer:

The reactants have more heat energy than the products.

Explanation:

The reactants in an exothermic reaction have higher potential heat energy than the products, this is because they release the energy as heat.

Answer:

just took test is the reactants have more heat

Explanation:

Answer:

x = 1/100 = 0.01

Explanation:

1/10 = √x

(1/10)² = (√x)²

1/100 = x

or x = 0.01

Answer:

CHEMIcal hiSToRY

Explanation:

Answer:

In the nucleus.

Explanation:

Answerfirst one

Explanation:

Answer:

Carbon - 14

Oxygen - 16

Nitrogen - 15

Sulphur - 16

Explanation:

The question above is related to the "Periodic Table of Elements" which shows the proper arrangement of elements in a table. Every element falls on a group/family within the table. Each group has its own number, and the table has a total of 18 groups (from left to right). They are classified according to similarities in their characteristics. For example, group 1 is composed of alkali metals while group 2 is composed of alkali earth metals.

Answer:

c. density

hope this helps :)

Explanation:

Answer:

The network of nerve cells and fibres that transmits nerve impulses between parts of the body.

Answer: