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Ostrovityanka [42]

3 years ago

10

Which answer shows the correct balanced equation showing the process of iron oxide (Fe2O3) explosively combining with aluminum (

AI) to produce iron (Fe) and aluminum oxide (AI2O3)

1 answer:

Nimfa-mama [501]3 years ago

6 0

Answer:

The balanced equation is below.

Explanation:

Fe2O3 + 2Al = Al2O3 + 2Fe

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Please help! What happens to a Neutron in beta decay?

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It occurs when nucleus has too many protons or too many neutrons that can be transformed into the other. With beta minus decay, neutron decays can turn into a proton, an electron, and an antineutrino.

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A dam is used to retain water. Retaining water can also lead to flooding. Which most likely would be a new societal issue result

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Habitat destruction of the ecosystem.

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Transuranium elements are artificial and may be prepared by a fusion process in which heavy nuclei are bombarded with light ones

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Answer:

$_{97}^{345}\textrm{Bk}$

Explanation:

In a nuclear reaction, the total mass and total atomic number remains the same.

Am has an atomic number of 95. So correct reaction is:-

$^{343}_{95}\textrm{Am}+^{4}_{2}\textrm{He}\rightarrow ^A_Z\textrm{X}+2^1_0\textrm{n}$

To calculate A:

Total mass on reactant side = total mass on product side

343 + 4 = A + 2

A = 345

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

95 + 2 = Z + 0

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Hence, the isotopic symbol of unknown element is $_{97}^{345}\textrm{Bk}$

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4 years ago

How much heat do you need to raise the temperature of 100 g of aluminum from 30°C to 150°C?

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Heat energy can be calculated by using the specific heat of a substance multiplying it to the mass of the sample and the change in temperature. It is expressed as:

<span>Energy = mCΔT</span>

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Energy = 10800 J

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18.A 2.50 L sample of dry air in a cylinder exerts a pressure of

Vlada [557]

Answer:

$\boxed{\text{7.50 L}}$

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

$p_{1}V_{1} = p_{2}V_{2}$

Data:

$\begin{array}{rclrcl}p_{1}& =& \text{3.00 atm}\qquad & V_{1} &= & \text{2.50 L} \\p_{2}& =& \text{1.00 atm}\qquad & V_{2} &= & ?\\\end{array}$

Calculations:

$\begin{array}{rcl}3.00 \times 2.50 & =& 1.00V_{2}\\7.500 & = & 1.00V_{2}\\V_{2} & = &\textbf{7.50 L}\\\end{array}\\\text{The volume of the gas is } \boxed{\textbf{7.50 L}}$

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3 years ago