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Georgia [21]
3 years ago
12

Scientists need special tools to work in the laboratory. These tools are known as___________

Chemistry
1 answer:
inessss [21]3 years ago
3 0
Instruments

The specific type of instruments depends on the type of laboratory that you're working in: some labs for example use electron microscopes, others use mass spectrophotometers, others use multiplex biochemical analyzers, etc. But very broadly, the specialized tools we use in the laboratory are usually referred to as "instruments"
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A scientist uses an accelerator and high energy electrons to study the particles inside the protons of a helium atom. What parti
marissa [1.9K]
<span>B. the He nucleus C.the He electrons D.the He quarks</span>
6 0
3 years ago
How are the atomic number and the number of protons related to each other?
SpyIntel [72]

Answer:

Neutral atoms of each element contain an equal number of protons and electrons. The number of protons determines an element's atomic number and is used to distinguish one element from another. ... Together, the number of protons and the number of neutrons determine an element's mass number.

Explanation:

5 0
3 years ago
What is an example of a covalent bond and why​
zhenek [66]

Answer:

Water

Explanation:

Hydrogen and oxygen is bonded together to make H2O aka. water

5 0
2 years ago
What is the molarity (M) of .5 liter of a solution that has 205 g of NaCl dissolved in it?
jeka94

Answer:

<h2>Molarity = 7 mol / L</h2>

Explanation:

Since the mass of NaCl and it's volume has been given we can find the molarity by using the formula

<h3>C =  \frac{m}{M \times v}</h3>

where

C is the molarity

m is the mass

M is the molar mass

v is the volume

From the question

v = 0.5 L

m = 205 g

We must first find the molar mass and then substitute the values into the above formula

M( Na) = 23 , M( Cl) = 35.5

Molar mass of NaCl = 23 + 35.5 =

58.5 g/mol

So the molarity of NaCl is

C =  \frac{205}{0.5  \times 58.5}  \\ C =  \frac{205}{29.25}

C = 7.00854

We have the final answer as

<h3>Molarity = 7 mol / L</h3>

Hope this helps you

8 0
3 years ago
I need help with this :(
olga2289 [7]

Answer: 79.6 g

mwof 02 is 16 and mw of H2O is 18.

6 0
2 years ago
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