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Softa [21]
3 years ago
9

Which of the following is true about fossils?

Chemistry
2 answers:
Agata [3.3K]3 years ago
7 0

Answer:C

Explanation:

nikitadnepr [17]3 years ago
4 0
<h2>                        Hey Emma Here<em>!</em></h2>

Answer:

The answer is <u>B</u><em>!</em>

Explanation:

if they are lower this means that they have been on the ground longer there for older

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It's a mixture of H2O + a soluble substance like, salt.
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What are the three types of protist and how are they similar and how are they different (this is science but there is no tab for
allochka39001 [22]

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What type of sugar has the largest surface area
Valentin [98]

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d.) granulated

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7 0
3 years ago
What volume of hydrogen ( in L ) is produced from the complete reaction of 56.49 g of magnesium metal at STP
alexandr1967 [171]

Answer:

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6 0
2 years ago
The reaction of hydrogen gas and iron oxide is described by the chemical equation below. 3H2+Fe2O3→2Fe+3H2O How many moles of ir
ELEN [110]

Answer:

2.2 moles of Fe will be produced

Explanation:

Step 1: Data given

Number of moles of hydrogen gas = 3.3 moles

Number of moles of iron oxide = 1.5 moles

Step 2: The balanced equation

3H2 + Fe2O3 → 2Fe + 3H2O

Step 3: Calculate the limiting reactant

For 3 moles H2 we need 1 mol Fe2O3 to produce 2 moles Fe and 3 moles H2O

Hydrogen gas is the limiting reactant. It will completely be consumed (3.3 moles). Fe2O3 is in excess. There will react 3.3 / 3 = 1.1 moles

There will remain 1.5 - 1.1 = 0.4 moles Fe2O3

Step 4: Calculate moles Fe

For 3 moles H2 we need 1 mol Fe2O3 to produce 2 moles Fe and 3 moles H2O

For 3.3 moles H2 we'll have 2/3 * 3.3 = 2.2 moles Fe

2.2 moles of Fe will be produced

5 0
3 years ago
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