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inessss [21]
3 years ago
12

1. Which answer choice below BEST defines what a hypothesis is?

Chemistry
1 answer:
Butoxors [25]3 years ago
7 0

Answer:

C. A statement that explains an event or observation because it has been tested many times by

many different scientists.

You might be interested in
10 points
puteri [66]

Answer: Using more fossil fuels

Explanation: Burning fossil fuels releases Green House gasses into the atmosphere, such as carbon dioxide. The carbon dioxide in the atmosphere traps in heat, which causes global temperatures to increase.

3 0
2 years ago
Read the information about the halogen family.
Elodia [21]

Answer:

See explanation

Explanation:

Chlorine is a member of the halogen family known as a toxic yellowish green gas. Inhalation of chlorine for a prolonged period of time leads to  pulmonary edema. If a person comes in contact with compressed liquid chlorine the person may experience frostbite of the skin and eyes.

However chlorine is very useful in water disinfection and is preferred in water treatment because it provides residual disinfection of the treated water.

Chlorine gas may be dissolved in NaOH to form oxochlorate I which is used as a bleach in cleaning.

7 0
3 years ago
3. Burns from boiling water can be severe, caused by the transfer of energy from the boiling water to the
Free_Kalibri [48]

Answer:

Q = 3937.56  J

Explanation:

Heat transferred due to change in temperature is given by :

Q=mc\Delta T

c is the specific heat of water, c=4.18 J/g-°C

We have, m = 15 g, T_i=100^{\circ} C\ \text{and}\ T_f=37.2^{\circ} C

So,

Q=15\times 4.18\times (37.2-100)\\Q=-3937.56\ J

Hence, 3937.56  J of heat is transferred.

8 0
3 years ago
What is milk best described as? solution, suspension, compound, or colloid?
Debora [2.8K]
Milk is a complex colloidal system.
7 0
3 years ago
How many oxygen atoms are there in the following compound: 2HNO3<br> 3<br> 5<br> 6<br> 12
Fudgin [204]

Answer:

6

Explanation:

There is 2 of the coumpond, in one compound, there are 3 oxygens. But when there are two, it is 6.

7 0
3 years ago
Read 2 more answers
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