3 years ago

Which of the following has a dipole moment?

Chemistry

1 answer:

EastWind [94]3 years ago

8 0

Answer:

Explanation:

x yttt fc

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A 1 kg block of iron sits outside in the direct sun from 8am to 10am. At 8am the temperature of the block was 20.0°C and at 10am

Julli [10]

Answer:

About 3.5 kJ.

Explanation:

Recall the heat transfer equation:

$\displaystyle q = mC\Delta T$

Where q is the heat; m is the mass of the substance; C is its specific heat; and ΔT is the change in temperature.

The given specific heat of iron is 462 J/kg -°C.

Substitute and evaluate. Ensure correct units:
$\displaystyle \begin{aligned} q & = (1\text{ kg})\left(\frac{462\text{ J}}{\text{kg -$^\circ$C}}\right)(27.5\text{ $^\circ$C} - 20.0\text{ $^\circ$C}) \\ \\ & = (1\text{ kg})\left(\frac{462\text{ J}}{\text{kg -$^\circ$C}}\right)(7.5\text{ $^\circ$C}) \\ \\ & = 3.5\times 10^3 \text{ J} = 3.5\text{ kJ}\end{aligned}$

Therefore, the block of iron absorbed about 3.5 kJ of heat.

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3 years ago

2g 16g what is the product

nikklg [1K]

It is (16*2)(g*g) or 32g^2

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4 years ago

The molar mass of H2O is 18.015 g/lol. How many grams of H2O are present in 0.20 mol

Law Incorporation [45]

I'm not sure because I took chem. a long time ago, but I think 3.6 grams H2O

Hope this helps!!!

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4 years ago

What is the molality of a solution in which 3.0 moles of NaCl is dissolved in 1.5 Kg of water?

Nesterboy [21]

Density H2O = 1g/cm³
1,5 kg H2O = 1500g = 1500cm³ (1dm³ = 1000cm³)

3moles of NaCl-----in---------1500cm³ H2O
x moles of NaCl ----in--------1000cm³ H2O
x = 2moles of NaCl

answer: 2 mol/dm³

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musickatia [10]

Answer:

the answer is 387400 but I might be wrong

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3 years ago