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3 years ago

How do chemical indicators work? explain

1 answer:

3 0

Chemical indicator, any substance that gives a visible sign, usually by a color change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution.

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If sulfur dioxide and oxygen can be made into sulfur trioxide, what is the reverse reaction? A. SO3 +O2à SO3 B. 2SO2 + O2à 2SO3

ycow [4]

REVERSE REACTION WILL BE SO2+O2

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3 years ago

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What is the molarity of 6 moles (mol) of NaCl dissolved in 2 L of water?

Mama L [17]

Answer:

C: $\frac{6 mol}{2 L}$

Explanation:

we can use the molarity equation

$M = \frac{mol}{L}$

so to find M we plug in what we know, which is 6 moles of NaCl and 2 L of water, which gives us:

$\frac{6 mol}{2 L}$

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2 years ago

In your own words, describe how the energy of a pendulum is changed as it moves through one cycle of its motion. Pls help online

ruslelena [56]

In a perfect world without air resistance, the top of the swing would have the most potential energy, but the least amount of kinetic energy. As the pendulum falls down, it gains more kinetic energy as it travels faster due to gravitational acceleration but loses more potential energy as it loses height. The total amount of energy in the system (the sum of kinetic and potential energy) stays the same.

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4 years ago

Please help me with this and i'll give you brainlyst

Nataliya [291]

Answer:

1.) increases

2.) salinity

3.) kinetic

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5.) the water cycle

6.) wavelength

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3 years ago

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What would be the best flow rate of o2 for a patient with copd?

Step2247 [10]

When we say COPD, this means Chronic Obstructive Pulmonary Disorder. COPD includes a group of lung diseases which have progressed into a worse condition. One example of this is emphysema. In cases of COPD, they should be provided oxygen therapy and the best flow rate for patients with this disorder is <span>8-10 L/min, high-flow, via nasal prong. Hope this helps.</span>

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3 years ago