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4 years ago

6

The differences between two molecules include the type of sugar that forms a section of the molecules and the identity of one of

the four nitrogenous bases that make up another section of the molecules. These two molecules are —

1 answer:

klio [65]4 years ago

3 0

The answer is nucleic acids

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A flashlight has a resistance of 2.4 . What voltage is applied by the batteries if the current in the circuit is

hammer [34]

Answer : The voltage applied by the batteries is, 6.0 V

Solution : Given,

Resistance of flashlight = 2.4 ohm

Current in the circuit = 2.5 Ampere

Formula used :

$V=IR$

where,

V = applied voltage

I = current in the circuit

R = resistance of light

Now put all the given values in the above formula, we get

$V=(2.5A)\times (2.4ohm)=6volt=6V$

Therefore, the voltage applied by the batteries is, 6.0 V

6 0

3 years ago

Read 2 more answers

An aqueous solution was created by placing 0.018 g of NaCl into a 50 mL volumetric flask and diluting to volume with deionized w

Burka [1]

Answer:

Molarity: 6.2x10⁻³M NaCl

Molality: 6.2x10⁻³m NaCl

Mole Fraction: 1.1x10⁻⁴

Mass% NaCl: 0.036% (m/m NaCl)

Explanation:

<em>Molarity -Moles NaCl / L-</em>

<em>Moles NaCl -Molar mass: 58.44g/mol-</em>

0.018g * (1mol/58.44g) = <em>0.000308 moles NaCl</em>

<em>Liters water:</em>

50mL * (1L/1000mL) = <em>0.050L</em>

M = 0.000308 moles NaCl / 0.050L

<h3>M = 6.2x10⁻³M NaCl</h3><h3 />

<em>Molality -Moles NaCl / kg water-</em>

<em>Moles NaCl = 0.000308 moles NaCl</em>

<em>kg water = 50mL * (1g/mL) * (1kg/1000g) = 0.050kg</em>

m = 0.000308 moles NaCl / 0.050kg

<h3>m = 6.2x10⁻³m NaCl</h3><h3 />

<em>Mole Fraction -Moles NaCl / Moles water+ Moles NaCl-</em>

<em>Moles water = 50g * (1mol/18.01g) = 2.776 moles</em>

Moles fraction = 0.000308 moles NaCl / 0.000308 moles NaCl + 2.776moles water

<h3>Mole fraction = 1.1x10⁻⁴</h3><h3 />

<em>Mass Percent -Mass NaCl / Mass NaCl+Mass Water * 100</em>

0.018g / 50g+0.018g * 100

<h3>0.036% (m/m NaCl)</h3>

<em />

8 0

3 years ago

How many grams of calcium are made up by 2.68 x 1023 atoms?

raketka [301]

Answer:

Mass = 17.8 g

Explanation:

Given data:

Number of atoms of Ca = 2.68 × 10²³

Mass in gram = ?

Solution:

Avogadro number:

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.

1 mole = 6.022 × 10²³ atoms

2.68 × 10²³ atoms × 1 mole /6.022 × 10²³ atoms

0.445 mol

Mass in gram;

Mass = number of moles × molar mass

Mass = 0.445 mol × 40 g/mol

Mass = 17.8 g

5 0

3 years ago

What happens to an earthquake’s p-waves when they strike the liquid core?

padilas [110]

Answer:

They bounce off.

Explanation:

They change into S-waves. They change into R-waves.

6 0

4 years ago

Write Avogadro's number in "longhand", and then in scientific notation.

Bad White [126]

Answer:

Explanation: the scientific notation used to calculate a mole is 6.022 x 1023.

4 0

3 years ago