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3 years ago

8

Help me please thank you

1 answer:

Damm [24]3 years ago

5 0

The atomic number is equal to proton number : 30

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Dmitrij [34]

C I’m pretty sure that is the answer

5 0

2 years ago

Will the second method for determining volume (water displacement) work for ANY object or JUST an irregularly shaped one?

IrinaVladis [17]

Finding the volume of regular geometric objects uses standard formulas. The volume of a box equals length times width times height, for example. Not every object, however, fits a formula. Water displacement is best only used for irregular shaped objects.

3 0

3 years ago

1. Mendeleev organized elements in his periodic table in order of increasing ____________________.

lakkis [162]

1. Atomic Mass

2. Highest melting point

3. Configuration

4. A

5. A

6. D

7. A

8. C

9. B

10. A

11. C

12. C

13. A

7 0

3 years ago

Read 2 more answers

How many moles of Fe are produced from 7 moles of Zn?<br> Zn(s) + FeSO4(aq) → ZnSO4(aq) + Fe(s)

guajiro [1.7K]

Answer:

7 mol Fe

General Formulas and Concepts:

<u>Chemistry</u>

Stoichiometry

Explanation:

<u>Step 1: Define</u>

RxN: Zn (s) + FeSO₄ (aq) → ZnSO₄ (aq) + Fe (s)

Given: 7 moles Zn

<u>Step 2: Stoichiometry</u>

<u /> $7 \ mol \ Zn(\frac{1 \ mol \ Fe}{1 \ mol \ Zn} )$ = 7 mol Fe

<u>Step 3: Check</u>

<em>We are given 1 sig fig.</em>

Since our final answer is in 1 sig fig, there is no need to round.

3 0

3 years ago

Which is a sign of chemical change?

TEA [102]

A. Chocolate syrup dissolve in milk because the milk is changing

3 0

4 years ago

Read 2 more answers