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lys-0071 [83]
1 year ago
8

What are the rows of the periodic table called?

Chemistry
1 answer:
Arlecino [84]1 year ago
4 0

Answer:

i believe its called A. periods

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What conditions must occur before nuclear fusion begins during star formation?
allsm [11]
Conditions such as high pressure and high temperature must occur.
7 0
3 years ago
What is the mass of 4.5 moles of Cu(NO3)2?
Tatiana [17]

Answer:

The mass of 4.5 moles of Cu(NO3)2 is 843.55g

Explanation:

Mass = moles x Molar mass

Mass = 4.50(187.55)

         = 843.97g

6 0
3 years ago
Intravenous, or IV, solutions used in medicine must exert the same osmotic pressure as blood to prevent a net flow of water into
Novosadov [1.4K]

Answer:

\boxed{\text{7.5 bar}}

Explanation:

1. Find the molar concentration

Assume that we have 100 mL solution.

Mass of NaCl = 0.90 g

\text{Moles of NaCl} = \text{0.90 g} \times \dfrac{\text{1 mol}}{\text{58.44 g}} = 0.0154 \text{ mol}\\\\c = \dfrac{\text{Moles of NaCl}}{\text{Litres of solution}} = \dfrac{0.0154 \text{ mol}}{\text{0.100 L}} = \text{0.154 mol/L}

2. Find the osmotic pressure

The formula for osmotic pressure (Π) is

Π = icRT

T = (37 + 273.15) K = 310.15 K

\Pi = 1.88 \times \text{0.154 mol}\cdot \text{L}^{-1} \times \text{0.083 14 bar}\cdot\text{L}\cdot\text{K}^{-1}\text{mol}^{-1} \times \text{310.15 K} = \text{7.5 bar}\\\\\text{The osmotic pressure of blood at body temperature is }\boxed{\textbf{7.5 bar}}

3 0
3 years ago
Provide only the major alkene product that results when n,n-dimethylhexan-2-amine undergoes cope elimination?
Fofino [41]

The major alkene  product that results when n,n-dimethylhexan-2-amine undergoes cope elimination is hexene or hex-1-ene.

The reaction in which an amine is oxidize to an intermediate called an N-oxide which , when heated , acts as base in an intramolecular elimination reaction. The oxidation of tertiary amine into N-oxide is called cope reaction.

This elimination gives the less substituted alkene along with more substituted alkene which is Zaitsev product.

Example: Cope elimination of  n,n-dimethylhexan-2-amine form hexene.

To learn more about alkene ,

brainly.com/question/13910028

#SPJ4

5 0
2 years ago
The order of elements in the periodic table is based on of elements in the periodic table is based on
Serhud [2]
The increasing atomic number
6 0
3 years ago
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