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Mademuasel [1]
3 years ago
8

Can someone plz help me answer this question

Chemistry
1 answer:
Nana76 [90]3 years ago
7 0

Answer:

10 ml

Explanation:

The graduated cylinder contains 19 ml of water before the silver pellet is placed inside. Afterwards, the graduated cylinder measures 29 ml of water. Therefore the pellet displaced 10 ml of water. ( 29ml - 19ml = 10ml )

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An infant acetaminophen suspension contains 80 mg/0.80 mL suspension. The recommended dose is 15 mg/kg body weight.
Brrunno [24]

Answer:

0.8853 mL

Explanation:

First we <u>convert 13 lb to kg</u>, keeping in mind that <em>1 lb = 0.454 kg:</em>

  • 13 lb * \frac{0.454kg}{1lb} = 5.902 kg

Then we <u>calculate how many mg of acetaminophen should be given</u>, using the <em>recommended dose and infant mass</em>:

  • 15 mg/kg * 5.902 kg = 88.53 mg

Finally we<u> calculate the required mL of suspension</u>, using its <em>concentration</em>:

  • 88.53 mg ÷ (80 mg/0.80 mL) = 0.8853 mL
8 0
3 years ago
What does the prefrontal cortex do? What happens to grey matter in adolescence? What does this mean?
shutvik [7]

Answer:

Adolescence is a time of significant growth and development inside the teenage brain. The main change is that unused connections in the thinking and processing part of your child's brain (called the grey matter) are 'pruned' away. ... The front part of the brain, the prefrontal cortex, is remodelled last.

7 0
3 years ago
Please help. it’s my last question.
ale4655 [162]
<h3>Further explanation </h3>

Given

Atomic symbol

Required

Atomic composition

Solution

Atomic number = number of protons = number of electrons

Mass Number (A) is the sum of protons and neutrons

Number of protons and Number of Neutrons  in nucleus

Number of electrons in the shell

From the picture:

protons = 3

neutrons = 4

electrons = 3

atomic number = protons = electrons = 3

mass number = protons + neutrons = 3+4 = 7

4 0
3 years ago
Scientists can make atoms of large elements which have not been previously known. Identify an element that would have similar pr
olasank [31]

Answer:

Radon

Explanation:

One element that will have similar property as an atom with 118 protons is Radon because it will belong to the p-block and the noble gas group.

The element will follow atomic number 117 which is already in the 7th group on the periodic table.

  • Generally, on the periodic table, elements in the same group will have the same chemical property.
  • The valency of most elements determines their chemical behavior.
  • Since our mystery element is in the 8th group, noble gas group, it will mostly behave like any of the elements in the group.
3 0
4 years ago
Some single cell organisms are similar to blank because they have the ability to blank
Orlov [11]

Explanation:

animals; move

I THINK SO SORRY IF I AM WRONG

5 0
2 years ago
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