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dimaraw [331]
3 years ago
14

5. 54 J of heat is required to raise the temperature of a 2.47g unknown substance from 17.10C to 46.70C. a) Calculate the specif

ic heat of the substance b) What is the substance?
Chemistry
1 answer:
musickatia [10]3 years ago
5 0
<h3>upemnavsi wiwnownivv</h3>
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Magnesium reacts with sulfuric acid in an exothermique reaction. Write an equation for the reaction. Include state symbols in yo
goldenfox [79]

Answer:

The reaction between magnesium and sulphuric acid is given as :

Mg(s) + H2SO4(aq) --> MgSO4(aq) + H2(g)

Explanation:

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What is the principal difference between a strong and weak acid?
jekas [21]

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Find the pressure of a gas if the volume is 2.00 L, the temperature is 310 Kelvin and
kipiarov [429]

Answer:

25.42 atm

Explanation:

Data Given:

Volume of a gas ( V )= 2.00 L

temperature of a gas ( T ) =  310 K

number of moles (n) = 2​ mol

Pressure of a gas ( P ) = to be find

Solution:

Formula to be used

              PV= nRT

Rearrange the above formula

              P = nRT / V . . . . . . . . . . (1)

Where R is ideal gas constant

R = 0.08205 L atm mol⁻¹ K⁻¹

Put values in equation 1

                 P = nRT / V

                  P = 2 mol x 0.08205 L atm mol⁻¹ K⁻¹ x 310 k / 2 L

                  P = 50.84 L atm / 2 L

                  P = 25.42 atm

P ressure of gas (P) will be = 25.42 atm

7 0
3 years ago
Look at the diagram below.
Irina-Kira [14]

Answer:

if charge of ion is positive then it will loose electron

if charge of ion is negative it will gain electron

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What observations and inferences can you make from this picture?
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3 years ago
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