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Dmitriy789 [7]
3 years ago
13

Directions: Read the paragraph carefully and identify the correct words that fit in the given sentences inside the box. Write yo

ur answer on a separate sheet.
Analyze the results
Dependent Hypothesis Test the hypothesis Draw a conclusion Question/Problem Observation Six Scientific step will lead you to an educated guess called (5) where you can have tentative answer to your question. In order for you to prove your educated guess you need to (6) by designing and conducting an experiment. In the experiment you need to identify the variables present and these are the (7) and (8) variables. The data from the experiment will be collected to (9) The summarized results from the experiment will determine whether the hypothesis is accepted or rejected and that is where you (10)Lu​

Chemistry
1 answer:
timama [110]3 years ago
3 0

Answer:

Scientific method, six, observation, question/ problem, hypothesis, test the hypothesis, depedent, independent, analyze the results, draw a conclusion

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4.
Scilla [17]

Answer:

B

Explanation:

Elements are atoms and all atoms have mass and occupy space

8 0
3 years ago
2al(s)+3cl2(g)→2alcl3(s) δh∘ = -1408.4 kj. how much heat (in kilojoules) is released on reaction of 4.70 g of al?
Annette [7]
Answer:
             - 122.58 kJ

Solution:
According to following  equation,

                          <span>2 Al  +  3 Cl</span>₂    <span>→    2 AlCl</span>₃    <span> δH</span>°<span> = -1408.4 kJ
</span>
When,
         54 g (2 mole) Al on reaction releases  =  <span>1408.4 kJ heat
So,
                               4.70 g of Al will release  =  X kJ of Heat

Solving for X,
                      X  =  (4.70 g </span>× 1408.4 kJ) ÷ 54 g

                      X  =  - 122.58 kJ
7 0
4 years ago
An ideal gas _____.
Paha777 [63]

THE ANSWERS ARE A AND B!!!!

HOPE I HELPED

6 0
3 years ago
Read 2 more answers
This graph represents an endothermic reaction. What does it show about the potential energy of reactants and products? Abuzua nu
Nata [24]

Answer:

The potential energy of the products is greater than the potential energy of the reactants

Explanation:

i just took the test

6 0
3 years ago
P O R F A V O R
ale4655 [162]

Answer:

a. 45×10³ kg

b. 1.25 kg

c. 5443200 s

d. 2.69×10⁻⁴ m/s²

e. 2.57×10⁻⁶N

f. 7.48×10⁻³ m /s²

g. 2.45 Pa

h. 10 m/s

Explanation:

The SI units are: kg, m, s, N, K, A, Pa, J and cd

a. 1 g is the mass for 1 cm³. We convert the m³ to cm³

45 m³. 1×10⁶ cm³ / 1 m³ = 45×10⁶ cm³

By the way, 45×10⁶ cm³ = 45×10⁶ g

We convert the g to kg →  45×10⁶ g . 1 kg / 1000 g = 45×10³ kg

b. As 1 g = 1 cm³,  we convert the cm³ to g and then, the g to kg

1250 cm³ = 1250 g → 1250 g . 1kg / 1000 g = 1.25 kg

c. 1 day has 24 hours; 1 hour has 60 minutes; 1 minute has 60 seconds

1 hour has 3600 s. Then 24 h . 3600 s / 1 h = 86400 s

86400 s/d. 63 d = 5443200 s

d. 1 min² = 3600 s²

97 cm / 3600 s² = 0.0269 cm/s²  / 100 = 2.69×10⁻⁴ m/s²

e. 927 g.cm / min² / 3600 s² = 0.2575 g.cm/s² → dyn

We need to convert dyn to N

1 dyn = 10⁻⁵N → 0.2575  dyn . 10⁻⁵N / 1dyn = 2.57×10⁻⁶N

f. 1 m/s² = 12960 km/h²

12960 km/h² . 1 m/s² / 97 km/h² = 7.48×10⁻³ m /s²

g. 2500 g/cm² . 1kg / 1000 g = 2.5 kg/cm²

1 Pa = 1.02kg/cm²

2.5 kg/cm² . 1 Pa / 1.02 kg/cm² = 2.45 Pa          

h. 1 h = 3600 s

36 km / 3600 s = 0.01 km /s → 0.01 km . 1000 m / 1 km = 10

= 10 m/s

5 0
3 years ago
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