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PolarNik [594]
3 years ago
10

Which of the following are testable? hypotheses laws theories

Chemistry
2 answers:
Tamiku [17]3 years ago
5 1
Hypothesis and theory
Nevertheless2 years ago
0 0

hypotheses
laws
theories

All three

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Drag each tile to the correct box.
pychu [463]

problem identification

hypothesis

experimentation

data collection and analysis

data interpretation

data presentation

conclusion

4 0
3 years ago
Lead ions and magnesium ions both have a charge of 2+. predict the ionic equation for this reaction.
FinnZ [79.3K]
Answer:
PbMg

Explanation:
Because they both have a charge of 2+, they can be reduced and cancel each other out because 2 and 2 can be reduced to 1
4 0
2 years ago
I need help with Chemistry: Mole Conversion<br> It must be answered in complete detail
Anni [7]

Answer:

As Per Given Information

Number of moles SO₂ ( Sulphur dioxide ) is 0.30

We 've been asked to find the number of atoms in given moles of Sulphur dioxide .

Value of Avogadro Number is 6.022 × 10²³ mol⁻¹

For finding the number of atoms we will use formale

\underline{\boxed{\textbf{\textsf{ Number \: of \: atoms \:  = Given \: moles \:  . Avogadro \: number}}}}

Putting the given value we obtain

\sf \twoheadrightarrow \: Number \: of \: atoms \:  = 0.30 \times 6.022 \times  {10}^{  23}    \\  \\ \sf \twoheadrightarrow \: Number \: of \: atoms \:  = \: 1.8066 \times  {10}^{ 23} atoms

So, the number of atoms in sulphur dioxide is 1.8066 × 10²³

8 0
2 years ago
Sodium chloride reacts with copper sulfate to produce sodium sulfate and copper chloride. mc011-1.jpg This equation represents a
Anarel [89]
This is a double replacement because both Copper and Sodium reacted with each other compounds , hence "double"
7 0
3 years ago
Read 2 more answers
Is silver tarnishing a physical change or a chemical change?​
Shalnov [3]

Answer:

chemical

Explanation:

Some bronze objects tarnish to a dark brown color. Chemical properties can be identified by the changes they produce. The change of one substance into another substance is called a A piece of wood burning, an iron fence rusting, and a silver spoon tarnishing are all examples of chemical changes.

6 0
3 years ago
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