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2 years ago

How can people conserve water at home?

Chemistry

2 answers:

dlinn [17]2 years ago

8 0

Answer:

washing dishes only when the dishwasher is full

Explanation:

REY [17]2 years ago

5 0

Answer:

Explanation:

ed20

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Is the specimen classified as living or non-living? Use three pieces of evidence and reasoning to justify your answer. Provide 3

Anestetic [448]

Answer: All living things move in some way. This may be obvious, such as animals that are able to walk, or less obvious, such as plants that have parts that move to track the movement of the sun. All living things grow. Earthworms hatch from eggs and can grow up to a metre or more in length! Some earthworms are also able to regrow small parts of their body that have been lost or injured. Chromists are a diverse group of plant-like organisms and range from very small to very large. They are found in almost all environments.

Explanation: I hope that helped yall!

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2 years ago

Water often has dissolved gases and other chemicals in it. When this water encounters rocks, the minerals in the rocks can be ch

babunello [35]

Erosion is the best anwser for that

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2 years ago

Which of these is a pure substance? A) a penny B) Sugar C) ocean water D) iced tea

Ann [662]

Heyo,

Sugar is a pure substance. A pure substance is a substance that has chemical properties. Sugar is a pure substance.

8 0

2 years ago

Read 2 more answers

Please help!!<br> I don’t understand

laiz [17]

<h3>Answer:</h3>

150 g Si

<h3>General Formulas and Concepts:</h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Use Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[Given] 3.2 × 10²⁴ atoms Si

[Solve] grams Si

<u>Step 2: Identify Conversions</u>

Avogadro's Number

[PT] Molar Mass of Si - 28.09 g/mol

<u>Step 3: Convert</u>

[DA] Set up: $\displaystyle 3.2 \cdot 10^{24} \ atoms \ Si(\frac{1 \ mol \ Si}{6.022 \cdot 10^{23} \ atoms \ Si})(\frac{28.09 \ g \ Si}{1 \ mol \ Si})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 149.266 \ g \ Si$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. Instructed to round to 2 sig figs.</em>

149.266 g Si ≈ 150 g Si

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2 years ago

What happens to a radioisotope when it undergoes nuclear decay?

Alex Ar [27]

The correct answer is b :)

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2 years ago