The law states that unbalanced forces cause objects to accelerate with an acceleration that is directly proportional to the net force and inversely proportional to the mass. Acceleration is caused both by magnitude and direction of velocity.

5 0

3 years ago

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How much energy has your body used, in joules, if your health indicates the 450 Calories were burned during your workout? How ma

11Alexandr11 [23.1K]

Answer:

107.55 J, 88.67 cal

Explanation:

1 Joule = 0.239 Calories

450 cal x 0.239 = 107.55 J

3.5 x 106 = 371

371 J = 371 x 0.239 cal

371 J = 88.67 cal

3 0

3 years ago

Ill give brainliest and a 5 star review for the best answer Do you think your town or neighborhood has an ecosystem? If you don’

Flura [38]

Answer:

it depends if you live by a lake yes fish,bigger fish,biggest fish,then humans eat them. But if not then no ecosystem without food and animals

Explanation:

factttttttttttssss

5 0

3 years ago

According to this chemical reaction, which is the number of grams of Fe produced from 14 moles of H2? Fe3O4 + 4 H2 → 3 Fe + 4 H2

IRINA_888 [86]

Answer:

$\boxed{\text{586 g}}$

Explanation:

We know we will need a balanced equation with masses, moles, and molar masses, so let’s gather all the information in one place.

M_r: 55.85

Fe₃O₄ + 4H₂ → 3Fe + 4H₂O

n/mol: 14

1. Use the molar ratio of Fe:H₂ to calculate the moles of Fe.

$\text{Moles of Fe = 14 mol H$_{2}$} \times \dfrac{\text{3 mol Fe}}{\text{4 mol H$_{2}$}} =\text{10.5 mol Fe}$

2. Use the molar mass of Fe to calculate the mass of Fe

$\text{Mass of Fe = 10.5 mol Fe} \times \dfrac{\text{55.85 g Fe}}{\text{1 mol Fe}} = \textbf{586 g Fe}\\\\\text{The reaction will produce $\boxed{\textbf{586 g}}$ of Fe}$

7 0

3 years ago