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3 years ago

When the forces acting on the object are balanced the object will?

Chemistry

1 answer:

Volgvan3 years ago

8 0

Answer:

When two forces acting on an object are of similar size but acting in opposite directions, we say they are forces of balance. If the forces on an object are balanced (or if there are no forces acting on it), this is what happens: the object stays stationary

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How many grams of water in 8.22 grams of cuso4*5h2o?

S_A_V [24]

Molar mass of CuSO4 * 5 H2O
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Mass of water in that formula: 5 * 18 = 90 g/mol
Percent by mass of water = 90 / 249.546 = 36%
<span>So, 36% of your 8.22 g is water. 0.36 * 8.22= 2.95 g of water
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3 years ago

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3 years ago

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Which one of the following is a combustion reaction?

Nady [450]

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3 years ago

C3H8+3O2 = 3CO2+4H2O what is the enthalpy combustion please show work

irakobra [83]

Answer:

$\Delta H_{comb}=2043.85kJ/mol$

Explanation:

Hello there!

In this case, according to the given chemical reaction, it possible for us to set up the expression for the calculation of the enthalpy change as shown below:

$\Delta H_r=-\Delta H_{comb}=3\Delta _fH_{CO_2}+4\Delta _fH_{H_2O}-\Delta _fH_{C_3H_8}-3\Delta _fH_{O_2}$

Thus, given the values of the enthalpies of formation on the attached file, we obtain: $-\Delta H_{comb}=3(-393.5kJ/mol)+4(-241.8kJ/mol)-(-103.85kJ/mol)-3(0kJ/mol)\\\\-\Delta H_{comb}=-2043.85kJ/mol\\\\\Delta H_{comb}=2043.85kJ/mol$

Best regards!

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2 years ago

When the forces acting on the object are balanced the object will?​

When the forces acting on the object are balanced the object will?