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sweet-ann [11.9K]
3 years ago
9

Examples of the skills used in science include _____ and _____.

Chemistry
1 answer:
ollegr [7]3 years ago
5 0
In science you want to use observations and measurements. 
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Please someone explain this too me​
Brums [2.3K]
I believe it would be 7.731. x 10^5? That is if they want you to evaluate.
3 0
3 years ago
Dichotomous Keys are used to identify organisms based on their observed characteristics. Dichotomous means..
BartSMP [9]

Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification. So I believe your answer would be A.

7 0
4 years ago
A solution was prepared by mixing 50.0 g
frez [133]

Answer:

4.78 %.

Explanation:

<em>mass percent is the ratio of the mass of the solute to the mass of the solution multiplied by 100.</em>

<em></em>

<em>mass % = (mass of solute/mass of solution) x 100.</em>

<em></em>

mass of MgSO₄ = 50.0 g,

mass of water = d.V = (0.997 g/mL)(1000.0 mL) = 997.0 g.

mass of the solution = mass of water + mass of MgSO₄ = 997.0 g + 50.0 g = 1047.0 g.

<em>∴ mass % = (mass of solute/mass of solution) x 100</em> = (50.0 g/1047.0 g) x 100 = <em>4.776 % ≅ 4.78 %.</em>

4 0
4 years ago
What makes physical change a physical change and a chemical change a chemical change
Snowcat [4.5K]
A physical change is any change in a substances form that does not change its chemical makeup. Examples of physical changes are breaking a stick or melting ice. A chemical change occurs when atoms of a substance are rearranged, and the bonds between the atoms are broken or formed. HOPE THIS HELPS!!
6 0
2 years ago
Read 2 more answers
A piece of work can be finished in 30 days 8 hours a day. In how many Days the work would have been finished working 6 hours a d
goblinko [34]

Answer:

If 8 hours= 30 days

then 6 hours= 8×30÷6

                    = 40 days

Explanation:

7 0
3 years ago
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