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2 years ago

!! PLEASE NO COPY AND PASTE FROM THE INTERNET !! how are wedge ( a simple machine object ) used in the real world

1 answer:

5 0

An example of a wedge in the real world court be an axe used to split things apart or something like a nail holding things together because the end of an axe and a nail have a wedge that is used to perform the tasks they are used for.

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What is stp? provide an answer using at least two different units of pressure and complete sentences?

kogti [31]

STP stands for the Standard Temperature and Pressure. The standard temperature is 273 Kelvin or 0 degrees Celcius or 32 Fahrenheit and the standard pressure is 1 atm pressure or 760 mmHg, or 10,325 Pascals. STP is most commonly used when performing calculations on gases.

3 0

3 years ago

Calcium oxide (CaO), an important ingredient in cement, is produced by decomposing calcium carbonate (CaCO3) at high temperature

alisha [4.7K]

Answer:

0.0018 mol/min is the average rate of carbon dioxide gas production in moles per minute during the 10 minutes.

Explanation:

Pressure of carbon dioxide gas = P = 0.25 atm

Volume of carbon dioxide gas = V = 5.0 L

Moles of carbon dioxide gas = n

Temperature of the carbon dioxide gas,T = 550°C = 550+273 K = 823 K

Using an ideal gas equation :

$PV=nRT$

$n=\frac{PV}{RT}=\frac{0.25 atm\times 5.0 L}{0.0821 atm L/mol K\times 823 K}$

n = 0.018 mol

In 10 minutes pressure of carbon dioxide gas reached to 0.25 atm

Average rate of production of moles of carbon dioxide gas per minute in duration of 10 minutes:

$=\frac{0.018 mol}{10 min}=0.0018 mol/min$

0.0018 mol/min is the average rate of carbon dioxide gas production in moles per minute during the 10 minutes.

8 0

3 years ago

I need help with these questions fast plz no links!!!!

nydimaria [60]

Answer:

I Hope u can understand and it's correct answer

8 0

2 years ago

What is true of a solution of 1.0M HCL

Charra [1.4K]

Answer:

What is true of a solution of 1.0 M HCl(aq)? It contains 1.0 gram of HCl per 100 grams of water.

Explanation:

8 0

2 years ago

Convey the following information in the form of balanced chemical equation:

Aliun [14]

Answer:

Carbon dioxide reacts with limewater (a solution of calcium hydroxide, Ca(OH) 2), to form a white precipitate (appears milky) of calcium carbonate, CaCO 3.

Hope it helps you! :)

6 0

2 years ago