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Stells [14]
4 years ago
11

Jamal wants to make a model of a hill near his house to test the way the slope affects how rain runs down the hill. Which type o

f model would be best for what he needs?
Chemistry
2 answers:
Scrat [10]4 years ago
8 0

a scale-model mound made of the same materials that make the real hill

Nikitich [7]4 years ago
4 0

a scale-model mound made of the same materials that make the real hill

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Harriet has an itch in her throat, and she begins to cough. she reaches for a cup of water to drink. which action is carried out
Nikitich [7]
when she reaches for the cup that is somatic nervous system. when she begins to cough
8 0
3 years ago
Are nuclear bombs ethical? Explain please
Mrac [35]

Answer:

<u>Yes, they are.</u>

Explanation:

The United States is one of these nuclear superpowers, making the ethical issues associated with these weapons critical and relevant. ... Most research across disciplines unanimously agrees that it is immoral to detonate an atomic weapon due to both short and long-term catastrophic effects.

In fact, some scholars have concluded that it is therefore morally wrong to act in ways that produce these outcomes, which means it is morally wrong to engage in nuclear warfare.

6 0
3 years ago
Read 2 more answers
Which is an example of ionization?
Reptile [31]
Ionization is a formation of ions from neutral atoms or molecules.

SO₂ + H₂O = HSO₃⁻ + H⁺

Mg(OH)₂ = Mg²⁺ + 2OH⁻
3 0
3 years ago
Read 2 more answers
write a molecular, ionic, and net ionic equation for the reaction between solid magnesium carbonate and sulfuric acid.
Stels [109]

Answer:

How to Write the Net Ionic Equation for H2SO4 + MgCO3 = MgSO4 + H2O + CO2 -

4 0
3 years ago
A sample of pure NO2 is heated to 335 ∘C at which temperature it partially dissociates according to the equation 2NO2(g)⇌2NO(g)+
vodka [1.7K]

The equilibrium constant for the reaction is 0.00662

Explanation:

The balanced chemical equation is :

2NO2(g)⇌2NO(g)+O2(g

At t=t  1-2x ⇔ 2x + x moles

The ideal gas law equation will be used here

PV=nRT

here n= \frac{w}{W} = \frac{w}{V}= density

P = \frac{density RT}{M}       density is 0.525g/L, temperature= 608.15 K, P = 0.750 atm

putting the values in reaction

0.75 = \frac{0.525 x 0.0821 x 608.15 }{M}

  M    = 34.61

         

to calculate the Kc

Kc=\frac{ [NO] [O2]}{NO2}

  \frac{1-2x}{1+x} x M NO2 + \frac{2x}{1+x} M NO+ \frac{x}{1+x} M O2

Putting the values as molecular weight of NO2, NO,O2

\frac{46(1-2x) +30(2x)+32x}{1+x}

34.61= \frac{46}{1+x}

x= 0.33

Kc= \frac{4x^2)x}{1-2x^2}

    putting the values in the above equation

Kc = 0.00662

     

5 0
3 years ago
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