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20 days ago

A balloon filled with air has a volume of 4.24 liters at 23.00°

2 answers:

7 0

$pV = nRT$ , or $V = \frac{nRT}{p}$ , which includes p - pressure, V - volume, n - quantity of substance, T - temperature measured in K.

Then: $\frac{V_2}{V_1} = \frac{n_2RT_2p_1}{p_2n_1RT_1}$

$n_2 = n_1$ , $p_2 = p_1$

$V_2 = V_1 \cdot \frac{T_2}{T_1} = 4.24 \frac {(273.00+5.00)}{(273.00+23.00)}=3.98 l$

lions [2.9K]20 days ago

6 0

The updated volume of the balloon, when cooled at a constant pressure, is 3.98 L

Explanation

This new volume was determined using the formula from Charles' law

presented as V1/ T1 = V2/T2 where,

V1 = 4.24 L

T1= 23°C converted to kelvin = 23 + 273 = 296 K

T2 = 5.00°C converted to kelvin = 5.00 + 273 = 278 K

V2 =?

By rearranging the equation to isolate V2, we can find it by multiplying both sides by T2

V2 = V1 x T2/ T1

This results in V2 = (4.24 L x 278 K) / 296 K = 3.98 L

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The parent element decays by beta decay. which daughter element will form?

castortr0y [3046]

Beta decay occurs in two forms: β⁻ decay and β⁺ decay. In β⁻ decay, a neutron is transformed into a proton through the emission of an electron. If β⁻ decay occurs, the mass number of the daughter nucleus remains unchanged, but the number of protons increases by 1 and the number of neutrons decreases by 1, compared to the parent nucleus. On the other hand, β⁺ decay involves the conversion of a proton into a neutron via the emission of a positron. In this case, the mass number of the daughter nucleus stays the same, while the number of protons decreases by 1 and the number of neutrons increases by 1 compared to the parent nucleus.

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11 days ago

An atom of beryllium (m = 8.00 u) splits into two atoms of helium (m = 4.00 u) with the release of 92.2 kev of energy. if the or

VMariaS [2998]

The energy released results in a kinetic energy of 92.2 keV for the products. We should convert keV into Joules, noting that 1 keV equals a kiloelectron volt. The required conversion is: 1.602×10⁻¹⁹ <span>joule = 1 eV

Kinetic energy = 92.2 keV * (1,000 eV/1 keV) * (</span>1.602×10⁻¹⁹ joule/1 eV) = 5.76×10²³ Joules

Next, we can determine the velocity of each He atom from the kinetic energy:
KE = 1/2*mv²
5.76×10²³ Joules = 1/2*(4)(v²)
This solves to give us: v = 5.367×10¹¹ m/s

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20 days ago

Read 2 more answers

The equilibrium constant for the reaction sr(s) + mg2+(aq) ⇌ sr2+(aq) + mg(s) is 2.69 × 1012 at 25°c. calculate e o for a cell m

eduard [2782]

Sr(s)+Mg²+(aq)→Sr²+(aq)+Mg(s)
Number of electrons transferred, n=2. Equilibrium constant,
K=2.69×10∧12
ΔG=-2.303RT logK
R=gas constant=8.314J/mol-k
T= temperature in K= 25°C=25+273=298K
Calculating gives us ΔG = -70922.3J. However, ΔG = -nFE
n= number of electrons transferred in the reaction =2
F= faraday = 96500C
E=cell potential is what?
∴E = ΔG.nF
=-(-70922.3)/2×96500)
=0.367V.

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28 days ago

Every single-celled organism is able to survive because it carries out *

castortr0y [3046]

Every unicellular organism prospers by executing metabolic activities.

Metabolic activities encompass the set of chemical reactions essential for sustaining life.

Explanation:

Different metabolic pathways maintain an organism's viability. Various metabolic activities occur in all living organisms.

These include processes like cellular respiration, reproduction, excretion, and digestion. Each living cell engages in these activities to survive.

Organisms acquire the energy necessary for these activities through food consumption.