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densk [106]
3 years ago
7

What can student do to increase the force of attraction of magnet on the iron(metal) block?

Chemistry
2 answers:
bulgar [2K]3 years ago
7 0
Rub the magnet on some iron because it will have a stronger attraction.
Fantom [35]3 years ago
3 0
Rub the magnet on the iron an it will cause a stronger force of attraction. Hope this helped!
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2.38g of black copper(iii) oxide is completely reduced to by hydrogen to give copper and water. What are the number of atoms of
OleMash [197]

Explanation:

here is the answer bae. Feel free to ask for more

6 0
3 years ago
Scientists have discovered how to use electricity to power cars. Running cars on electricity could help
Fiesta28 [93]
Running cars on electricity would conserve gasoline because electric cars do not use the same resources.

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8 0
3 years ago
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How many moles of LiF would be required to produce a 2.5 M solution with a volume of 1.5L
mihalych1998 [28]

Multiply the values.

n = cv

Where

n =mol

c = concentration

v = volume

n = 2.5×1.5 = 3.75mol

3 0
3 years ago
When 1 mole of P4O10(s) reacts with H2O(l) to form H3PO4(aq) according to the following equation, 453 kJ of energy are evolved.
jarptica [38.1K]

The question is incomplete, the complete question is;

When 1 mole of P4O10(s) reacts with H2O(l) to form H3PO4(aq) according to the following equation, 453 kJ of energy are evolved.

P4O10(s) + 6H2O(l)When 1 mole of P4O10(s) reacts4H3PO4(aq)

Is this reaction endothermic or exothermic? _________endothermicexothermic

Answer:

The reaction is exothermic

Explanation:

An exothermic reaction refers to any reaction in which heat was EVOLVED. The word was stressed to indicate that it holds the key to answering the question correctly.

We were told in the question that heat was evolved, hence the reaction is exothermic in nature.

The balanced thermochemical equation of the reaction is :

P₄O₁₀(s) + 6H₂O(l) → 4H₃PO₄(aq) ____ ΔH = -453 kJ

4 0
3 years ago
PLEASE HELP!! I need these before 12!
Aloiza [94]

Answer:

1. 32

2. 28

3. 46

4. 57

5. 13

6. 32

7. 21

Explanation:

8 0
3 years ago
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