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Anvisha [2.4K]
3 years ago
9

Branches are thrown into a wood chipper and mulch is created. Chemical change or physical change?

Chemistry
1 answer:
murzikaleks [220]3 years ago
5 0

Answer:

it's a physical change

Explanation:

there there was no burning it was grabbing and just cutting

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The answer is meiosis. Not Mitosis


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Why is a changing ocean temperature of only one or 2 degrees so concerning?
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<span>One degree Celsius indicates the same temperature change as one </span>
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How many grams of solid barium sulfate form when 30.0 mL of 0.160 M barium chloride reacts with 70.0 mL of 0.065 M sodium sulfat
Advocard [28]

Answer:

1.06g of BaSO₄ is produced

Explanation:

BaCl₂(aq) + Na₂SO₄(aq) ⇄ 2NaCl(aq) + BaSO₄(aq)

mole BaCl₂ = (0.16M × 0.030L) = 0.0048mole BaCl₂

mole Na₂SO₄ = (0.065M × 0.070L) = 0.00455mole Na₂SO₄

Amount of product BaSO₄ produce from each reagent

BaCl₂ = (0.0048 BaCl₂)  × ( 1 mol BaSO₄ / 1mol BaCl₂) × (233.3896g BaSO₄ / 1mol BaSO₄)

= 1.12g  BaSO₄

Na₂SO₄ = (0.00455 Na₂SO₄)  × ( 1 mol BaSO₄ / 1mol Na₂SO₄) × (233.3896g BaSO₄ / 1mol BaSO₄)

= 1.06g BaSO₄

4 0
3 years ago
She was expecting 122.7 grams of lead for her lesson that day but only got out 107.9 grams of lead. What was the percent yield o
Ipatiy [6.2K]
The equation for percent yield is
PercentYield= \frac{Actual}{Theoretical} X 100

As such, the theoretical yield or expected yield is, in this case, 122.7g of Pb, the actual in this case is 107.9g so we have
PercentYield= \frac{107.9}{122.7} X 100 \\ Percent Yield=0.879381X100 \\

Therefore, the percent yield of her reaction is 89.94%
4 0
3 years ago
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