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3 years ago

Can synthetic chemicals have origins in nature, or are they completely man-made? Give examples and

1 answer:

6 0

Yes they can have origins in nature. A bunch of the elements on the periodic table are chemicals and this are basic substances and cannot be man made.

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The table below shows the speed of sound waves from musical sound sources at 20°C.

Mariulka [41]

Answer:

Explanation:

Wavelengths and frequency can vary inversely to produce the same wave speed

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2 years ago

I need help on Chemistry?<br><br>ANYONE PLEASE?

serg [7]

Answer:

1. 1g/ml

Explanation:

1. Density is mass divided by volume (g/mL).

10g/10mL = 1 g/mL

2. When you already know the density and the volume, you can use the density as a unit converter.

$5mL*\frac{20g}{mL} = 100g$

3. It's the same with density and mass.

$20g*\frac{1mL}{5g} = 4mL$

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2 years ago

Sometimes engineers increase output through crossbreeding. This is when they

Natalka [10]

Genetically alter the DNA of a plant to produce a desired trait.

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3 years ago

Students investigate forces and how they affect objects. They use a small car and wooden blocks to carry out their investigation

Umnica [9.8K]

Answer:

increase the number of blocks

increase the number of students pulling the cart

increase the number of blocks and increase the number of students pulling the cart

decrease the number of blocks

decrease the number of students pulling the cart

decrease the number of blocks and decrease the number of students pulling the cart

(ANSWER CHOICES)

Explanation:

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2 years ago

How many hydrogen atoms are in Ca(OH)2

raketka [301]

There are 2 hydrogen atoms.

7 0

3 years ago