What is the balance for Fe + O2 → Fe304

Answer:

option C is correct = 1.14 × 10²² molecules of  CO₂

Explanation:

Given data:

Number of moles of CO₂ = 0.0189 mol

Number of molecules = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

For given question:

1 mole of CO₂ =  6.022 × 10²³ molecules of  CO₂

0.0189 mol of CO₂ ×  6.022 × 10²³ molecules of  CO₂ / 1mol

1.14 × 10²² molecules of  CO₂

Thus, option C is correct.

Answer:

its a chemical formula, it has numbers and symbols

Explanation:

1 km = 1000m

55.6 km = x m

x = 55.6*1000

x = 55600m

Answer:

55,600 meters

Explanation:

1km=1,000 meters

55.6km= 55,600 meters

Answer:

homogeneous

Explanation:

one type of molecules

Answer:

hill

Explanation:

Answer:

B, trust me

Explanation:

^^^

Answer:

2.29 moles of SF₆ contain 334.5 g SF₆

Explanation:

Given data:

Mass of SF₆ = ?

Number of moles of SF₆ = 2.29 mol

Solution:

Formula:

Mass = number of moles × molar mass

Molar mass of SF₆ = 32.065 + (19)×6

Molar mass of SF₆ = 146.06 g/mol

Now we will put the values in formula.

Mass = 2.29 mol ×  146.06 g/mol

Mass = 334.5 g

2.29 moles of SF₆ contain 334.5 g SF₆ .

Answer:

4

Explanation:

You know this by looking at the number of protons and electrons which represents the atomic number.

Answer:

4 electron/proton

Explanation:

in first shell it has 2 electron

then in second shell it has 2 electron also

so add them together we get 4

Answer:

\no

Explanation:

Answer:

well 6.3 times 10 is 63 and 6.7 times 10 is 67

Explanation:

Answer:

Tongs

Explanation:

You should be wearing gloves too, but tongs is what you use.

Answer:

Can u write in a paper and post again unable to understand

Answer:

Each part of a system only has functions for that system.

Explanation:

since the second answer is right, then that automatically eliminates the third one. each part of a system can function for other systems too. such as the brain which controls all systems.

dont know but i hope this joke makes u feel better today

A lava rock quit his job at the volcano today

Said they took him for granite.

Answer:

0.00378788

Explanation:

Answer:

i think it the B

Explanation:

Answer:

2.11x10^26 atoms in 350.8 moles of Aluminum

Explanation:

I converted moles to atoms by using Avogadro's number which is 6.022x10^23

The solution is:

350.8 moles of Al x (6.022x10^23/1 mole) = 2.11x10^26 atoms

Answer:

Physical property

Explanation:

Physical properties differ from chemical properties in that a different substance is formed during a chemical process whereas, a physical property produces NO 'new' substance upon completion of change.  By definition, 'Triple Point' is the temperature-vapor pressure value where the substance of interest exists in all three states simultaneously; that is, solid, liquid and gas. In this, the chemistry of cyclohexane remains unchanged regardless of temperature-pressure conditions and no new compounds are formed as products of change.

Example:

At the triple point of cyclohexane C₆H₁₂(s)  ⇄  C₆H₁₂(l) ⇄ C₆H₁₂(g) ⇄ C₆H₁₂(s),  the cyclohexane is still cyclohexane regardless of state and is classified as a physical process. The combustion of cyclohexane in the presence of oxygen, however, produces new substances  (CO₂(g) and H₂O(g)) having chemical and physical properties different from original cyclohexane added in the process.

For the combustion of C₆H₁₂(g) => 2C₆H₁₂(g) + 13O₂(g) => 12CO₂(g) + 2H₂O(g) produces substances (CO₂(g) and H₂O(g)) having different physical and chemical properties than the C₆H₁₂(g) introduced into the system and is classified a chemical process.

Answer: the answer is B, C, and D

Explanation:

Answer:

-Do not throw around any of the athletic equipment used in this exercise.

-Be careful not to spill when transferring water from the water displacement procedure; this could cause people to slip and fall.

-Check containers, such as beakers, graduated cylinders, and buckets, for cracks or chips prior to use.

Explanation:

hope it helps! correct on edge :)

Answer:

Water

Explanation:

When a salt solution is heated, the solvent (assumedly water) will evaporate at a greater rate because the water molecules have greater energy.

Answer:

18.8 g Citric acid

Explanation:

We have a 5.00% (w/v) citric acid solution, that is, there are 5.00 grams of citric acid every 100.0 mL of the solution. We can use dimensional analysis to calculate the grams of citric acid in 375 mL of the 5.00% (w/v) solution.

375 mL Solution × (5.00 g Citric acid/100.0 mL Solution) = 18.8 g Citric acid

Answer:

The correct answer is 4.5 g/mL.

Explanation:

To find the density, we must remember the formula for density, which is given by the following:

density = mass/volume

In this case, we are given both the mass and the volume, so we just need to plug in these values into the formula to solve for the density.  This is modeled below:

density = mass/volume

density = 2344 g/520 mL

density = 4.5 g/mL

Therefore, the correct answer is 4.5 g/mL (notice that the units for our answer match what is being asked for in the problem).

Hope this helps!

Answer:

the community needs to work alongside with government and religious organisations. the communities work on both profile and non profile work incase of human rights violations. they also force the government to take necessary action

Answer:

Empirical formula of compound  is C₄H₈O

Explanation:

Given data:

Mass of compound = 5.60 g

Mass of CO₂ = 13.7 g

Mass of H₂O = 5.60 g

Empirical formula of compound = ?

Solution:

Percentage of C:

13.7 g/5.60 g × 12/44× 100

2.45×0.273× 100 = 66.9%

Percentage of H:

5.60 g/ 5.60 g × 2.016/18 × 100

11.2%

Percentage of O:

(66.9% + 11.2%) - 100 = 21.9%

Grams atom of  C , H, O

66.9/12 = 5.6

11.2 / 1.008 = 11.11

21.9 / 16 = 1.4

Atomic ratio:

           C                 :               H           :              O

           5.6/1.4         :            11.11/1.4    :            1.4/1.4

              4                :               8            :               1

Empirical formula:

C₄H₈O

Answer:

C - Secure

Explanation:

Edg 2020

Anxious-Ambivalent attachment is displayed when a child actively explores the environment but seeks out the caregiver for comfort or reassurance.  

• The form of attachment when children seem to distrust caregivers, and this insecurity usually signifies that their surroundings is explored with trepidation rather than excitement is known as Anxious-Ambivalent attachment.  

• In this form of attachment, children continuously look for approval from their caregivers and spontaneously observe their environments for fear of being abandoned.  

• The children developing under this form of attachment style, seem to carry what they have acquired into adulthood, and usually feel unloved by their partners.  

Thus, the given case is of Anxious-Ambivalent attachment.

To know more about:

https://brainly.com/question/25577203

Answer:

C. Alternating layers of metal ions and electron

Answer:

The longest-running show in Broadway history officially opened on January 26, 1988 and is still playing at the Majestic The Andrew Lloyd Webber musical won 7 1988 Tony Awards including Best Musical.

Explanation:

Brainliest plz?

Answer:

well 4.2 times 10 is 42 and 6.1 times 10 is 61

Explanation: