3 years ago

Dalton theorized that matter is made of tiny, indivisible particles called atoms. In what way did the theories of each

Chemistry

1 answer:

stich3 [128]3 years ago

7 0

A. J.J. Thomson hope this helps

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Name four products of incomplete combustion

aalyn [17]

Answer: The products are carbon monoxide, water and carbon.

Explanation:

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2 years ago

1. An electric power plant uses energy from burning coal to generate steam at 450 °C. The plant is cooled by 20 °C water

kap26 [50]

Answer:

Explanation:

Efficiency of the electric power plant is $e=1-\frac{T_{2}}{T_{1}}$

Here Temperature of hot source $T_{1} = 450^{o}C=450+273=723 K$

and Temperature of sink $T_{1} = 20^{o}C=20+273=293 K$

Hence the efficiency is $e=1-\frac{293}{723}=0.5947=59.47%$

Now another formula for thermal efficiency Is

$e_{therm}=\frac{Q_{1}-Q_{2}}{Q_{1}}=\frac{W}{Q_{1}}$

Here QI is the of heat taken from source 100 MJ ; Q2 of heat transferred to the sink (river) to be found

W is the of work done and W = QI -Q2

Hence From $e_{therm}=\frac{Q_{1}-Q_{2}}{Q_{1}}=\frac{W}{Q_{1}}$

$W=e(Q_{1})=(0.5947)(100)=59.47MJ$

Hence the of heat transferred to the river Is $Q_{2} -W = (100 -59.47=40.53$

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3 years ago

Force = 2.32 N<br> Acceleration = 0.19 m/s2<br> Mass= ?

Mkey [24]

mass = 12.2 kg

Explanation:

To find the mass we use the following formula (Newton's Second Law of Motion):

force = mass × acceleration

mass = force / acceleration

mass = 2.32 N / 0.19 m/s²

mass = 12.2 kg

Learn more about:

Newton's Second Law of Motion

brainly.com/question/834262

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2 years ago

A cork has a mass of 3 grams and a volume of 16 cms calculate the density

REY [17]

hey mate here is ur answer

solution

mass{m}=3 gram

=3/1000

volume{v}=16cm

=16/100

density=m/v

=3/1000÷16/100

=3/160

=0.01875kg/m3

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3 years ago

Indirect costs incurred in a manufacturing environment that cannot be traced directly to a product are treated as a.product cost

Alisiya [41]

Answer:

C. product costs and expensed when the goods are sold

Explanation:

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3 years ago