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3 years ago

Which has more energy, low or high frequency electromagnetic radiation?

Chemistry

2 answers:

hammer [34]3 years ago

5 0

Energy increases with increasing frequency.

mafiozo [28]3 years ago

5 0

The correct answer is high frequency electromagnetic radiation. Hope this helps.

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When two or more substances are physically combined the result is a:.

sp2606 [1]

Answer:

I think it is called a Mixture

Explanation:

Sorry if it is wrong

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3 years ago

15. In complete sentences, describe how electronegativity is related to polarity.

Sergeu [11.5K]

Explanation:

The absolute value of the difference in electronegativity (ΔEN) of two bonded atoms provides a rough measure of the polarity to be expected in the bond and, thus, the bond type. When the difference is very small or zero, the bond is covalent and nonpolar. When it is large, the bond is polar covalent or ionic.

Electrons in a polar covalent bond are shifted toward the more electronegative atom; thus, the more electronegative atom is the one with the partial negative charge. The greater the difference in electronegativity, the more polarized the electron distribution and the larger the partial charges of the atoms.

5 0

3 years ago

Read 2 more answers

What is the amount of mass in each given unit of volume?

labwork [276]

Answer:

Each volumn is different and therefore has a specific and unique mass.

3 0

3 years ago

A 3.50 g sample of an unknown compound containing only C , H , and O combusts in an oxygen‑rich environment. When the products h

statuscvo [17]

Explanation:

First, calculate the moles of $CO_{2}$ using ideal gas equation as follows.

PV = nRT

or, n = $\frac{PV}{RT}$

= $\frac{1 atm \times 4.41 ml}{0.0821 Latm/mol K \times 293 K}$ (as 1 bar = 1 atm (approx))

= 0.183 mol

As, Density = $\frac{mass}{volume}$

Hence, mass of water will be as follows.

Density = $\frac{mass}{volume}$

0.998 g/ml = $\frac{mass}{3.26 ml}$

mass = 3.25 g

Similarly, calculate the moles of water as follows.

No. of moles = $\frac{mass}{\text{molar mass}}$

= $\frac{3.25 g}{18.02 g/mol}$

= 0.180 mol

Moles of hydrogen = $0.180 \times 2$ = 0.36 mol

Now, mass of carbon will be as follows.

No. of moles = $\frac{mass}{\text{molar mass}}$

0.183 mol = $\frac{mass}{12 g/mol}$

= 2.19 g

Therefore, mass of oxygen will be as follows.

Mass of O = mass of sample - (mass of C + mass of H)

= 3.50 g - (2.19 g + 0.36 g)

= 0.95 g

Therefore, moles of oxygen will be as follows.

No. of moles = $\frac{mass}{\text{molar mass}}$

= $\frac{0.95 g}{16 g/mol}$

= 0.059 mol

Now, diving number of moles of each element of the compound by smallest no. of moles as follows.

C H O

No. of moles: 0.183 0.36 0.059

On dividing: 3.1 6.1 1

Therefore, empirical formula of the given compound is $C_{3}H_{6}O$ .

Thus, we can conclude that empirical formula of the given compound is $C_{3}H_{6}O$ .

6 0

3 years ago

The elements found in Group 2A, from top to bottom, include beryllium, magnesium, calcium, strontium, and barium. Which of these

Sedaia [141]

<span>The correct answer is Beryllium. They all belong to atoms that have low electronegativity, and as you go down the group the farther away you are the lower it gets. This means that they are not good at bonding with and attracting pairs of electrons. Berryllium has an electronegativity of 1.5, which is low compared to Fluorine, the highest one that has 4.</span>

7 0

3 years ago