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CaHeK987 [17]
3 years ago
12

Why is it correct to say seawater is a mixture.

Chemistry
2 answers:
ZanzabumX [31]3 years ago
7 0
It's a mixture of H2O + a soluble substance like, salt.
liq [111]3 years ago
5 0

Answer:

It's a mixture of H2O + a soluble substance like, salt.

Explanation:

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Donna has observed that her father can control the speed of their grandfather clock by adjusting the height of the weight on the
adelina 88 [10]

Answer:

1. Independent variable : pendulum's height

2. Dependent variable : Pendulum speed

Explanation:

In an experiment scientist uses such things to search for any cause and its effect. experimenters design the model in such a way that change in one of the item causes a change in another.

These are called variables which are independent variable and dependent variable. Independent variables can be changed by the experimenter while dependent variables are not controllable by the experimenter.

In the context, the hypothesis is when the pendulum's height is reduced, the clock will speed up.

1. Independent variable : height of the pendulum

2. Dependent variable : Pendulum speed

4 0
2 years ago
Sedimentary rocks are changed to metaphoric rocks through seduction and _____________?
Nana76 [90]
Hello,

Here is your answer:

The proper answer to this question is "deposition".

Your answer deposition.

If you need anymore help feel free to ask me!

Hope this helps!
7 0
3 years ago
Use the periodic table to answer the questions below.
Romashka-Z-Leto [24]
B ............ is the answer,
3 0
2 years ago
Read 2 more answers
A 0.216 g sample of carbon dioxide, CO2, has a volume of 507 mL and a pressure of 470 mmHg. What is the temperature of the gas i
Gala2k [10]

Answer:

The temperature of the gas is 876.69 Kelvin

Explanation:

Ideal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.

The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P*V = n*R*T

where P is the gas pressure, V is the volume that occupies, T is its temperature, R is the ideal gas constant, and n is the number of moles of the gas.

In this case:

  • P= 470 mmHg
  • V= 570 mL= 0.570 L
  • n= 0.216 g= 0.0049 moles (being the molar mass of carbon dioxide is 44 g/mole)
  • R= 62.36367 \frac{mmHg*L}{mol*K}
  • T=?

Replacing:

470 mmHg*0.570 L= 0.0049 moles* 62.36367 \frac{mmHg*L}{mol*K} *T

Solving:

T=\frac{470 mmHg*0.570 L}{0.0049 moles* 62.36367\frac{mmHg*L}{mol*K} }

T= 876.69 K

<em><u>The temperature of the gas is 876.69 Kelvin</u></em>

6 0
2 years ago
Help me
Valentin [98]

Answer:

South American

Explanation:

When you look at a map of plates, only South American forms a boundary with the African plate out of those specific plates

6 0
3 years ago
Read 2 more answers
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