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3 years ago

Which of the following elements has the most properties in common with iron (Fe)?

2 answers:

8 0

If my memory serves me well, the following element which has the most properties in common with iron (Fe) is definitely <span>Osmium (Os) because they are stand for the same group!
I'm sure it helps!</span>

Luda [366]3 years ago

8 0

Answer:

Osmium

Explanation:

Got it right on the test.

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How many mol of C7H16 would you have if you have 76.36 grams? Give your answer to 2 decimal spaces.

tensa zangetsu [6.8K]

0.761 mol of $C_7H_{16}$ would you have if you have 76.36 grams.

A mole is defined as 6.02214076 × $10^{23}$ of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Given data:

Mass=76.36 grams

$Moles = \frac{mass}{molar \;mass}$

$Moles = \frac{76.36 grams}{100.21 g/mol}$

Moles = 0.761

Hence, 0.761 mol of $C_7H_{16}$ would you have if you have 76.36 grams.

Learn more about moles here:

brainly.com/question/8455949

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7 0

2 years ago

Why might genetically identical twins have different phenotype

KIM [24]

Answer:

They may have different phenotypes because of differences in their environments, such as nutrition and healthcare. Why might genetically identical twins have different phenotypes? Any genes on the same chromosome could be linked genes, whereas only genes on sex chromosomes can be sex-linked genes.

Explanation:

8 0

3 years ago

amount of energy released, which is represented by the ccc Energy and Matter the surface of the sun is at a temperature of about

olasank [31]

Answer:

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Explanation:

3 0

3 years ago

For each metal complex give the coordination number for the metal species. m(nh34cl2

tankabanditka [31]

The coordination number is 6. The outer Cl- ion isn't included, so you count 4 x NH3 and 2 x Cl- are within Co's coordination sphere.

8 0

3 years ago

What is the molality, m, of an aqueous solution of ammonia that is 12.83 M NH3 (17.03 g/mol)? This solution has a density of 0.9

daser333 [38]

Answer:

Molality = 18.5 m

Explanation:

Let's analyse data. We want to determine molality which means mol of solute / 1kg of solvent. (Hence we need, the moles of solute and the mass of solvent in kg)

12.83 M means molarity → mol of solute in 1L of solution

Density refers always to solution → Mass of solution / Volume of solution

1L = 1000 mL

We can determine the mass of solution with density

0.9102 g/mL = Mass of solution / 1000 mL

Mass of solution = 0.9102 g/mL . 1000 mL → 910.2 g

Let's convert the moles of solute (NH₃) to mass

12.83 mol . 17.03 g/ 1 mol = 218.5 g

We can apply this knowledge:

Mass of solution = Mass of solvent + Mass of solute

910.2 g = Mass of solvent + 218.5 g

910.2 g - 218.5 g = 691.7 g → Mass of solvent.

Let's convert the mass in g to kg

691.7 g . 1kg / 1000 g = 0.6917kg

We can determine molalilty now → 12.83 mol / 0.6917kg

Molality = 18.5 m

6 0

3 years ago