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bixtya [17]
3 years ago
5

Rachel is using a Bunsen burner to heat a solution. Which of the following would let her control the rate of reaction in the sol

ution? A. replacing the amount of flammable gas used with different rates B. controlling the amount of air entering the combustion tube C. placing the burner in open surroundings
Biology
1 answer:
motikmotik3 years ago
5 0

Answer: b) controlling the amount of air entering the combustion tube

The rate of a reaction when using a Bunsen burner is changed by modifying the temperature of the flame.

In this type of burner, the temperature of the flame is modified by controlling the amount of air available for the flame. More air allowed will result in a hotter flame. This is achieved by turning the collar around the air holes.

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15
s344n2d4d5 [400]

OPTIONS:

a. When there are just two other people at the party.

b. When everyone is wearing a nametag.

c. When there are more than 50 people attending the same party.

d. When the need for help from the person who is having a heart attack is very clear

Answer:

c. When there are more than 50 people attending the same party.

Explanation:

Bystander effect is a term used in social psychology to describe the tendency of an individual to intervene in the event of an emergency to offer help to the person needing it, when others are present at the scene of the emergency.

In the case of an emergency just like the scenario stated in the question, where someone develops a heart attack at a dance party, if the party has more people, the slimmer the chance of the person getting help from any of the 50 people at the party, as the presence of others would tend to discourage the any individual from attempting to help the victim having the heart attack.

The situation that would more likely show the bystander intervention effect is <em>"c. When there are more than 50 people attending the same party."</em>

5 0
3 years ago
What would most likely cause the cycle to continue? An explanation inspires new questions and the process of making new observat
Gnoma [55]

Answer:

An explanation inspires new questions and the process of making new observations.

Explanation:

6 0
3 years ago
Read 2 more answers
Ringworm is caused by toxins produced by dermatophytes. mycosis that has invaded the blood stream. dermatophytes growing in the
Nonamiya [84]

Answer: the correct answer is dermatophytes growing in the outer dead tissue layers of the skin (epidermis).

Explanation:

Ringworm isn't a worrm but it is an infection caused by moldlike fungi that live in the dead tissue of your skin, hair or nails.

8 0
3 years ago
Please help !! I don’t know the answer !!
just olya [345]

Answer:

I am pretty sure it is A or D sorry if this does not help

8 0
3 years ago
EASY BRAINLIEST
Lapatulllka [165]
I’m pretty sure it’s melanin
5 0
4 years ago
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