Answer:
A shape has 2 pairs of parallel sides and no right angles. What shape is it?
Trapezoid
Parallelogram
Square
RectangleA shape has 2 pairs of parallel sides and no right angles. What shape is it?
Trapezoid
Parallelogram
Square
Rectangle
Explanation:
A shape has 2 pairs of parallel sides and no right angles. What shape is it?
Trapezoid
Parallelogram
Square
Rectangle
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Answer: 15062.4 Joules
Explanation:
The quantity of heat energy (Q) required to heat a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)
Thus, Q = MCΦ
Since,
Q = ?
Mass of food = 200.0g
C = 4.184 j/g°C
Φ = (Final temperature - Initial temperature)
= 83.0°C - 65.0°C = 18°C
Then, Q = MCΦ
Q = 200.0g x 4.184 j/g°C x 18°C
Q = 15062.4 J
Thus, 15062.4 joules of heat energy was contained in the food.
The reaction occurs in a similar way as magnesium does, but much less vigorous. Strong heating is required to make iron powder burn in oxygen. The reaction gives out a yellow showery sparks and produces a black solid. iron reacts with dilute hydrocloric acid to give iron chloride and hydrogen gas.
Element: Boron
Symbol: B
So answer is B
