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4 years ago

Convert 3.82 inches to km

Chemistry

2 answers:

weeeeeb [17]4 years ago

6 0

the answer is 0.000097 KM

viva [34]4 years ago

3 0

Answer:

9.70 ×10⁻⁵ m

Step-by-step explanation:

d = 3.82 in Convert to centimetres

d = 3.82 in × (2.54 cm/1 in)

d = 9.703 cm Convert to metres

d = 9.703 cm × (1 m/100 cm)

d = 9.703 ×10⁻² m Convert to kilometres

d = 9.703 ×10⁻² m × (1 km/1000 m)

d = 9.70 ×10⁻⁵ km

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A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 126 g of solutio

Karo-lina-s [1.5K]

Answer:

0.976 kJ/mol

Explanation:

A foam coffe cup is considered a perfectly insulated system: heat energy is not exchanged with the surroundings.

Under that assumption, the heat released by the chemical reaction is equal to the heat absorbed by the system.

1. Heat absorbed by the system:

Use the equation Heat = Q = m × C × ΔT, with:

m = 126 g (the amount of solution produced)
C = specific heat of pure water = 4.186 J/gºC
ΔT = increase of temperature = 24.70 ºC - 21.00ºC = 3.70ºC

Q = 126g × 4.186J/gºC × 3.70ºC = 1,951.5J

2. Enthalpy of the reaction

The enthalpy must be reported in kJ/mol.

Then, convert juoles to kilojoules, dividing by 1,000; and divide by 2.00 moles, which is the amount of compound that reacted:

ΔHrxn = 1,951.5J × (1kJ / 1,000J) × (1 / 2mol) ≈ 0.9758 kJ/mol

Round to 3 significant figures: 0.976 kJ/mol

4 0

3 years ago

What type of chemical reaction is AgNO3(aq)+KCL(aq) AgCL(s)+KNO3(aq)

emmasim [6.3K]

Answer:

double replacement reaction or double displacement reaction,

Explanation:

double replacement reaction, double displacement reaction, is a chemical process involving the exchange of bonds between two non-reacting chemical species which results in the creation of products with similar or identical bonding affiliations

Classically, these reactions result in the precipitation of one product.

in thía case it is AgCl

3 0

4 years ago

Atom is to element as ------------ is to compound I COULD GIVE 34 POINT!!!!!

Alexandra [31]

Answer:

possible answers

water

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hydrogen peroxide

table salt

carbon dioxed

sodium chloride

calsium carbonate

Explanation:

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3 years ago

The wall of an industrial furnace is constructed from 0.15-m-thick, fireclay brick having a thermal conductivity of LZ W/m.K. Me

aliya0001 [1]

Answer:

The rate of heat loss through the wall is 1700 watts.

Explanation:

The complete statement of the problem is:

The wall of an industrial furnace is constructed from 0.15-m-thick, fireclay brick having a thermal conductivity of 1.7 W/m·K. Measurements made during steady state operation reveal temperatures of 1400 and 1150 K at the inner and outer sur- faces, respectively. What is the rate of heat loss through a wall that is 0.5 m by 1.2 m on a side?

Given that wall of the industrial furnace is under steady conditions of heat transfer and whose configuration is a flat element, we use the equation of conductive heat transfer rate ( $\dot Q$ ), measured in watts:

$\dot Q = \frac{k\cdot w\cdot h}{l}\cdot (T_{i}-T_{o})$

Where:

$k$ - Thermal conductivity, measured in watts per meter-Kelvin.

$w$ - Width of the wall, measured in meters.

$h$ - Height of the wall, measured in meters.

$l$ - Thickness of the wall, measured in meters.

$T_{i}$ - Inner surface temperature, measured in Kelvin.

$T_{o}$ - Outer surface temperature, measured in Kelvin.

If we know that $k = 1.7 \,\frac{W}{m\cdot K}$ , $w = 1.2\,m$ , $h = 0.5\,m$ , $l = 0.15\,m$ , $T_{i} = 1400\,K$ and $T_{o} = 1150\,K$ , the steady state heat transfer is: