Evaluate 9 ÷ 3[(18 − 6) − 22]. 0.188 0.375 24 48
2 answers:
Answer:
The value of the expression is -0.3
Step-by-step explanation:
Consider the provided expression.
According to PEMDAS rule we first solve parenthesis, exponents, multiplication, division, addition, subtraction.
Solve the parenthesis as shown:
Open the parenthesis
Hence, the value of the expression is -0.3
You might be interested in
Answer:
The required specific heat is 196.94 joule per kg per °C
Step-by-step explanation:
Given as :
The heat generated = Q = 85.87 J
Mass of substance (m)= 34.8 gram = 0.0348 kg
Change in temperature = T2 - T1 = 34.29°C - 21.76°C = 12.53°C
Let the specific heat = S
Now we know that
Heat = Mass × specific heat × change in temperature
Or, Q = msΔt
Or, 85.87 = (0.0348 kg ) × S × 12.53°C
Or , 85.87 = 0.4360 × S
Or, S =
∴ S = 196.94 joule per kg per °C
Hence the required specific heat is 196.94 joule per kg per °C Answer