Which of the following might be in for a rough orbit around the Sun because of debris in their paths? (Choose all that apply.)

What is the role of an indicator in an acid-base titration? In your answer, identify how an appropriate indicator is chosen and

Anton [14]

An indicator shows where the endpoint of a titration is. Different indicators will change colors at different equivalence points. Phenolphthalein will change colors at around pH7.5 or so, and others like Methylene Blue will change around a pH of 6. Different titrations will have different pH's at different equivalence points.

6 0

3 years ago

Read 2 more answers

What are primary observations in science?

Nookie1986 [14]

Answer:

Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity.

Explanation:

5 0

2 years ago

12. The interior surface area of a tire is 4578 cm? What is the tire pressure in lbs/in", if 9172 kilograms of force

AlekseyPX

Answer:

28.5 lbs/in²

Explanation:

The following data were obtained from the question:

Area (A) = 4578 cm²

Force applied (F) = 9172 kg

Pressure (P) =..?

Next, we shall convert 4578 cm² to in².

This can be obtained as follow:

1 cm² = 0.155 in²

Therefore,

4578 cm² = 4578 cm² / 1 cm² × 0.155 in²

4578 cm² = 709.59 in²

Therefore, 4578 cm² is equivalent to 709.59 in²

Next, we shall convert 9172 kg to pounds (lbs) This is illustrated below:

1 kg = 2.20462 lbs

Therefore,

9172 kg = 9172 kg / 1 kg × 2.20462 lbs

9172 kg = 20220.8 lbs

Therefore, 9172 kg is equivalent to 20220.8 lbs

Finally, we shall determine the pressure as follow:

Area (A) = 709.59 in²

Force applied (F) = 20220.8 lbs

Pressure (P) =..?

P = F/A

P = 20220.8 lbs / 709.59 in²

P = 28.5 lbs/in²

Therefore, the tire pressure exerted of the surface is 28.5 lbs/in²

4 0

3 years ago

What is the word equation for this reaction?<br><br> Cl + O3 → ClO + O2

ololo11 [35]

Answer:

The bimolecular rate constant for the reaction Cl + O3 → ClO + O2 is measured over the temperature range 210 to 360 K in a discharge flow system using Cl atom resonance fluorescence at 134.72 nm to monitor the decay of Cl under pseudo first order conditions. Results, expressed in the form k1 = (2.35 ± 0.5) × 10−11 exp[−(171 ± 30)/T], are compared with other recent studies of this reaction. Stratospheric implications are discussed briefly including the possibility of a concurrent three-body mechanism with O2 forming ClO3.

Explanation:

4 0

3 years ago

To what temperature must a sample of gas initially at 27°C be heated in order to double the pressure if the volume remains const

victus00 [196]

<h3>Answer:</h3>

327° C

<h3>Explanation:</h3>

The initial temperature of the gas is 27°C

We need to find the final temperature.

If we assume the initial pressure is y

The final temperature will be 2y