In the Periodic Table, the vertical columns that extend down the Periodic Table are called

what causes the water on quarters to form a curved dome shape, with the terms surface tension, cohesion and hydrogen bonding

olasank [31]

This dome-like shape forms due to the water molecules' cohesive properties, or their tendency to stick to one another. ... Water molecules at the surface (at the water-air interface) will form hydrogen bonds with their neighbors, just like water molecules deeper within the liquid.

3 0

3 years ago

How many days pass until the exact same Moon shape reappears?

Troyanec [42]

22 because that how many days it will take for the exact moon shape to pass and it will then reappear.

4 0

4 years ago

Determine the mmol of both starting materials (factoring in that formic acid is not pure, but rather 88% weight/volume, or 88g/1

Oxana [17]

Solution :

Molecular Molar Mass Volume Density Mass Moles nmoles

formula (g/mol) (mL) (g/mL) (g)

$C_6H_8N_2$ 108.14 0.108 0.001 1

HCOOH 46.02 0.064 1.22 0.07808 0.0017 1.7

mmoles of o-phenylenediamine = 1 mmoles

mmoles of formic acid = 1.7 $\approx$ 2 mmoles

From the reaction of o-phenylenediamine and formic acid, we see,

1 mmole of o-phenylenediamine reacts with 1 mmole of formic acid.

But here, 2 mmoles of the formic acid , this means that the formic acid is an excess reagent and the o-phenylenediamine is the limiting reagent here.

The amount of product depends on the limiting reagent that is o-phenylenediamine. So, 1mmole of o-phenylenediamine will give 1mmole of product.

molar mass of Benzimidazole = $118.14$ g/mol

mmoles of Benzimidazole formed = $1$ mmol

Mass of benzimidazole formed = molar mass x $\frac{nmoles}{1000}$

$=\frac{118.14 \times 1}{1000}$

= 0.11814 g

So the theoretical yield of Benzimidazole is = 0.118 g = 118mg

5 0

3 years ago

The oxidation of an unsaturated fatty acid leads to the production of fewer ATPs than a saturated fatty acid with the same numbe

kirill [66]

Answer:

C) the double bond results in the bypassing of the first oxidation step of the pathway, thereby eliminating one FADH2 product

Explanation:

The beta oxidation of fatty acids is the process by which long chain saturated and unsaturated fatty acids are oxidized to the two-carbon product, acetylCoA.

The beta oxudation of fatty acids occurs in four steps after which the chain length is shortened by 2 with cleavage of an acetylCoA molecule.

The first step involves the oxidation of the fatty acid with introduction of a double bond between C-2 and C-3 of the long carbon chain. This reaction produces FADH2 which donates its electrons to electron carriers in the electron transport chain tomproduce 1.5 moles of ATP. This is the case with saturated fatty acids.

However, in unsaturated fatty acids (which are less reduced than saturated fatty acids) where there is already a double bond innthe molecule, the double bond results in the bypassing of the first oxidation step of the pathway, thereby eliminating one FADH2 product.

This causes a reduction In the number of ATP produced by unsaturated fatty acids when compared to saturated fatty acids.

8 0

3 years ago

A(n) ________ is an assemblage of minerals bound together, a mass composed of a single mineral, a mass of undifferentiated mater

Sliva [168]

Answer:

Rock

Explanation:

Rock -

It refers to the naturally occuring mass of mineral , with a uniform chemical composition , is referred to as a rock .

In the crust of the Earth , the composition is by the igneous rocks .

<u>There are three main type of rocks , i.e. , </u>

sedimentary rocks ,
metamorphic rocks ,
igneous rocks .

Hence , from the given information of the question ,

The correct term is rock.

8 0

4 years ago