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ivanzaharov [21]
3 years ago
13

What affect does attendance have on students' grades in science class? Write the independent variable, the dependent variable, a

nd the hypothesis.
Chemistry
1 answer:
alexira [117]3 years ago
6 0
Independent variable: the student chooses to miss class.
dependent variable: in result of the student missing class his grade goes down.
hyposthesis: if the student misses class multiple times, then his grades will go down.
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Calculate the average weight of the dogs listed in the chart below.
pishuonlain [190]

Answer:

19

Explanation:

Once you add all the weights together, you end up with 114 then you divide it by how many dogs there are, 6. 114/6 = 19. The average is 19 lbs.

3 0
3 years ago
Jeffry was wondering why when he made breakfast, that after he was done cooking, the mass of everything he used was not the same
12345 [234]

Answer:

equivalent exchange forces cancel out but the  substances are affected around the area

Explanation:

4 0
3 years ago
HELP.
Kamila [148]

Answer:

The mass of tin is 164 grams

Explanation:

Step 1: Data given

Specific heat heat of tin = 0.222 J/g°C

The initial temeprature of tin = 80.0 °C

Mass of water = 100.0 grams

The specific heat of water = 4.184 J/g°C

Initial temperature = 30.0 °C

The final temperature = 34.0 °C

Step 2: Calculate the mass of tin

Heat lost = heat gained

Qlost = -Qgained

Qtin = -Qwater

Q = m*c*ΔT

m(tin)*c(tin)*ΔT(tin) = -m(water)*c(water)*ΔT(water)

⇒with m(tin) = the mass of tin = TO BE DETERMINED

⇒with c(tin) = the specific heat of tin = 0.222J/g°C

⇒with ΔT(tin) = the change of temperature of tin = T2 - T1 = 34.0°C - 80.0°C = -46.0°C

⇒with m(water) = the mass of water = 100.0 grams

⇒with c(water) = the specific heat of water = 4.184 J/g°C

⇒with ΔT(water) = the change of temperature of water = T2 - T1 = 34.0° C - 30.0 °C = 4.0 °C

m(tin) * 0.222 J/g°C * -46.0 °C = -100.0g* 4.184 J/g°C * 4.0 °C

m(tin) =  163.9 grams ≈ 164 grams

The mass of tin is 164 grams

4 0
3 years ago
The quantitative amount of charge separation in a diatomic molecule contributes to the dipole moment of that molecule. A. True B
SOVA2 [1]

Answer:

The answer is True.

Explanation:

The sentence above is true it all adds up.

8 0
2 years ago
For this ionic compound, what would be the name of the anion? KMnO4 A. potassite B. potassiate C. permanganite D. permanganate
Elena-2011 [213]
The name given to the anion of this ionic compound is that it would be called D. Permanganate. This is MnO4^-.
5 0
3 years ago
Read 2 more answers
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