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deff fn [24]
3 years ago
7

Which of the following elements has the largest atomic radius? Bromine, Barium, Magnsium, Zinc

Chemistry
1 answer:
Sav [38]3 years ago
4 0

Answer:

Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.

Explanation:

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Which statement best describes the effect of color on energy absorption and reflection? 1. Light colors reflect more and absorb
fredd [130]
The statement which best described the effect of color on energy absorption and reflection is this: LIGHT COLORS REFLECT MORE AND ABSORB LESS THAN DARK COLORS. Black color absorbs all incident radiations while white color reflects all incident radiations; all other colors fall in the midst of these two colors.
8 0
4 years ago
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What is the ratio of carbon atoms to hydrogen atoms in a saturated cyclic hydrocarbon?
drek231 [11]
Thy answer tis 
1:2

ahh but why you may ask?
because there's 1 carbon bonded with 2 hydrogens.
the simplest answer, 
because chemistry. 
8 0
3 years ago
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Determine the number of moles of air present in 1.35 l at 750 torr and 17.0°c. ideal gas law formula: pv = nrt(r = 62.396 l•torr
Tatiana [17]

The number of moles of air present is 0.056 mole

<h3>What is the ideal gas equation?</h3>

The ideal gas is one in which molecules do not attract or repel each other.Many gases like oxygen,nitrogen, carbon di oxide can be treated as the ideal gases as particular temperature and pressure.The real gases at high temperature and lower pressure can be treated as ideal gases.

The given data in the question is

Volume = 1.35 L

Pressure (P) = 750 torr

Temperature (T) = 17 °C = 17 + 273 = 290 K

Gas constant (R) = 62.396 L•torr/mol•K

The number of moles (n) =?

How to determine the number of moles:

The number of moles present can be obtained by using the ideal gas equation as illustrated below:

PV=nRT

Divide both sides by RT

n=\dfrac{PV}{RT}

n=\dfrac{(750\times 1.350}{62.396\times 290)}

n=0.056\ moles

Hence, the number of moles of air present is 0.056 mole

To learn more about the ideal gas equation follow

brainly.com/question/4147359

7 0
3 years ago
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How many liters of hydrogen gas is formed from the complete reaction of 15.2 g C? Assume that the hydrogen gas is collected at a
ira [324]

Answer:

38 L

Explanation:

There is some info missing. I think this is the original question.

<em>Consider the chemical reaction: C(s) + H₂ O(g) ⟶ CO(g) + H₂ (g). How many liters of hydrogen gas is formed from the complete reaction of 15.2 g C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and a temperature of 360 K.</em>

<em />

Step 1: Write the balanced equation

C(s) + H₂ O(g) ⟶ CO(g) + H₂ (g)

Step 2: Calculate the moles corresponding to 15.2 g of C

The molar mass of C is 12.01 g/mol.

15.2g \times \frac{1mol}{12.01g} = 1.27 mol

Step 3: Calculate the moles of H₂ produced from 1.27 moles of C

The molar ratio of H₂ to C is 1:1. The moles of H₂ produced are 1/1 × 1.27 mol = 1.27 mol.

Step 4: Calculate the volume of H₂

We will use the ideal gas equation.

P \times V = n \times R \times T\\V = \frac{n \times R \times T}{P} = \frac{1.27mol \times \frac{0.0821atm.L}{mol.K}  \times 360K}{1.0atm}= 38 L

3 0
4 years ago
Has anyone done the chemical reactions lab in chemistry on k12?? can someone help me do it
nata0808 [166]
I can help
im doing it
4 0
3 years ago
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