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kozerog [31]
3 years ago
13

I need help please i need it today

Chemistry
1 answer:
creativ13 [48]3 years ago
8 0

Answer:

what help.....

i don't understand your question what help....

can you told me what help...

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2 years ago
H2 + O2 ---&gt; H2O<br> Classifying reaction
Degger [83]

Answer:

hydrogen + oxygen = water

3 0
3 years ago
Read 2 more answers
What measures are used to calculate the percent by volume of a solution?
Yuliya22 [10]
Titration is the method used.
4 0
3 years ago
How many sucrose molecules will be in 250 grams
sasho [114]
<h2>Answer:</h2>

We will need to know Avogadro's number and the molar mass of sucrose for this problem to do dimensional analysis.

  • Avogadro's number: 6.022 × 10²³ molecules
  • Molar mass of sucrose: 342.2965 g/mol

250g × \frac{1 mol}{342.297g} × \frac{6.022 * 10^{23} molecules}{1 mol} = 4.398 molecules

There are <em>4.398 sucrose molecules </em>in 250 grams of sucrose.

6 0
3 years ago
Home work)
s344n2d4d5 [400]

Answer:

1. Magnesium + Oxygen --> Magnesium oxide

2.Iron + Oxygen --> Iron oxide

3.Copper + Oxygen --> Copper oxide

Explanation:

When an Element such as Magnesium or any other Elements are reacted eith Oxygen it forms an Oxide.

If you ever need the symbol equation here it is too :

1. Mg + O --> MgO

2.Fe + O --> FeO

3.Cu + O--> CuO

3 0
2 years ago
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