All categories

4 years ago

2. Why is defining a “species" important for scientists?

Chemistry

2 answers:

Dahasolnce [82]4 years ago

8 0

So they know what it is and what it should do!

hope i helped

Naddik [55]4 years ago

8 0

It because there scientists!!

You might be interested in

Ultimately the carbon molecules in pyruvate end up as what molecules

jeyben [28]

CO2 Thats your answer

3 0

3 years ago

An alpha particle has the same composition as a A) hydrogen nucleus B) deuterium nucleus C) beryllium nucleus D) helium nucleus

Elza [17]

Answer:

Helium Nucleus

Explanation:

4 0

3 years ago

Give the half-equation for the reaction at the anode, during

oee [108]

The answer would be B

3 0

3 years ago

Which best describes the importance of the microscope to the development of cell theory? Microscopes color different parts of ce

aliya0001 [1]

Cells are too small to see with the naked eye.

It's pretty straight forward, use the cross-out method.

1) Microscopes MAGNIFY images, they don't color the cells. In fact, scientists have to use these chemicals to "stain" or color the cells to see them more easily through microscopes.

2) If the lenses of a microscope reduced the image of an organism to the size of a cell, you'd be seeing a very tiny human through your microscope, instead of actual cells.

3) Microscopes don't "trap" anything. In fact, scientists use plates or slides under microscopes to contain what they're studying.

8 0

3 years ago

Read 2 more answers

Barium sulfate is made by the following reaction.

ipn [44]

Answer:

%age Yield = 96 %

Explanation:

The balance chemical equation for given double replacement reaction is,

Ba(NO₃)₂ + Na₂SO₄ → BaSO₄ + 2 NaNO₃

Step 1: Calculate moles of Ba(NO₃)₂:

Moles = Mass / M.Mass

Moles = 75.1 g / 261.33 g/mol

Moles = 0.2873 moles of Ba(NO₃)₂

Step 2: Find out moles of BaSO₄ formed:

According to balance chemical equation,

1 mole of Ba(NO₃)₂ produced = 1 mole of BaSO₄

So,

0.2873 moles of Ba(NO₃)₂ will produce = X moles of BaSO₄

Solving for X,

X = 0.2873 mol × 1 mol / 1 mol

X = 0.2873 moles of BaSO₄

Step 3: Calculate Theoretical Mass of BaSO₄:

Mass = Moles × M.Mass

Mass = 0.2873 mol × 233.38 g/mol

Mass = 67.07 g of BaSO₄

Step 4: Calculate %age Yield as:

Theoretical Yield = 67.07 g

Actual Yield = 64.4 g

%age Yield = ???

Formula Used:

%age Yield = (Actual Yield ÷ Theoretical Yield) × 100

Putting Values,

%age Yield = (64.4 g ÷ 67.07 g) × 100

%age Yield = 96.01 % ≈ 96 %

6 0

3 years ago