Focus your attention to the units of the given data and the unit of the final measurement you're going to solve. Through dimensional analysis,you know that the working equation would be:

Food Value = CcalΔT/m
Food value = (6.15 kJ/°C)(1.29 °C)/0.611 g = 12.98 kJ/g

Convert kJ to cal (1 kJ = 239 cal)
Food value = 12.98*239 = 3,103.28 cal/g

4 0

3 years ago

If you move 50 meters in 10 seconds, what is your speed? Givens: d= t= Unknown: Formula: Plug in: Solve:

marta [7]

Answer:

$\huge\boxed{5 \ m/s}$

Explanation:

Given:

Distance = S = 50 m

Time = t = 10 secs

Unknown:

Speed = v = ?

Formula:

v = S/t

Plug In:

S = 50 m , t = 10 secs

Solution:

v = 50 m / 10 secs

v = 5 m/s

Hope this helped!

<h2>~AnonymousHelper1807</h2>

6 0

3 years ago

Describe how an acidic solution forms when HCHIS

kakasveta [241]

The presence of H3O+ is the hydronium ion, and one definition of an acid is something that donates a proton (H+). HCl in this case does just that. Basic solution forming with NaOH and water: ... NaOH + H2O ==>Na+ + OH- so it donates or produces OH- ions, thus making a basic solution

6 0

4 years ago