Chemistry Middle School

To make a 450g solution with a mass by mass concentration of 7%, how much salt and water do you need to mix?

Answers

Answer 1

Answer:salt: 31. 5g

water: 418. 5g

Explanation

Answer 2

Answer:

salt: 31. 5g

water: 418. 5g

Explanation:

Related Questions

Each element has a different:

number of protons and electrons
atomic mass and weight
Properties and characteristics
number of neutrons

Please take your time if needed!

Answers

Properties and characteristics

Answer:

(C.  Properties and characteristics.

Hope this helpos!

Explanation:

What type of energy is associated with this movement of the molecules?

Answers

Answer:

electric

Explanation:

Thermal energy,
or heat energy
( same thing)

is the energy that comes from the movement of atoms and molecules in a substance. Heat increases when these particles move faster.

How is the sun related to nuclear, radiant, and heat energy?

Answers

Answer:The sun creates energy through nuclear fusion. Kinetic energy creates heat and light.

Explanation:

the sun is related to those by beating really hot

Elements in the same group have _____.

the same number of electron shells
the same number of protons
similar chemical properties
the same number of isotopes

Answers

Answer:

Element in the same group have similar chemical properties.

the same number of electron shells

Why do scientists use models, and why do all models have limitations???
Plsss help! :) I will give brainliest!! :)

Answers

Answer:

Scientists use  models to represent data/evidence. However, all models have limitations. However, models are simplified versions of reality, and can't be totally accurate in representation.

Hope this helps :)

Answer:

Since models are simpler than real objects or systems, they have limitations. ... It may not predict the behavior of the real system very accurately. But the more computing power that goes into the model and the care with which the scientists construct the model can increase the chances that a model will be accurate.

What makes a good scientific question???
Plsss help! I will give brainliest! :)

Answers

Answer:

A good question is testable,  detailed, measured, and controlled.

Just let me know if you have any other questions.

Details, control and measurements.

The chemical formula for sulfuric acid is H2SO4. In one molecule of sulfuric acid, there are _____.

two atoms of helium
two atoms of oxygen
four atoms of oxygen
four atoms of sulfur oxide

Please help for my summer school, you can take your time (:

Answers

Answer:

four atoms of oxygen

Explanation:

two atoms of hydrogen

one sulphur atom

Four atoms of oxygen

PLZ HELP I WILL GIVE BRAINLY AND 50 POINTS
Put the steps of the scientific method into the correct order.

Devise an experiment to prove or disprove.
State conclusions.
Conduct a literature search.
Define the problem.
Propose a hypothesis.

Answers

Answer:

1.  State problem

2. Form hypothesis

3.  Conduct experiment

4.  Interpret data

5.  Draw conclusion

Explanation:

Here’s a random answer so that you can give the original answerer brainliest

If there is not one scientific method, then what do all scientists have in common???
Plsss I will give brainliest, and 12 points !!

Answers

Answer:

One thing that all scientists have in common is that they find problems in the world, and attempt to seek answers to those problems. Everything that scientists do begins with observations, leading to questions.

Let me know if this helps!

While no single scientific method is uniformly followed by all scientists, there are certain common aspects and concepts that scientists share in their search of knowledge and understanding.

These are some examples:

Scientists rely on empirical evidence gathered via observation, experimentation, and measurement.

Systematic and Objective Investigation: Scientists explore and analyse events using systematic and objective approaches.

Scientific discoveries should be repeatable, which means that other researchers should be able to replicate the tests and achieve identical results.

Thus, although scientists' methodologies and approaches differ between fields, these basic principles drive their research and contribute to the collective growth of scientific knowledge.

For more details regarding scientists, visit:

https://brainly.com/question/12965344

#SPJ6

Why do scientists need to be able to use math?

Answers

Many answers. For example because for science experiment researcher they use math to calculate an amount of effected, people and therefore analyze it by those numbers
To make sure that the amount of whatever they’re using is correct

Organisms can either be made of one cell or made of more than one cell

Answers

Answer:

The statement is true.

Explanation:

Organisms can be unicellular (made up of one cell) or multicellular (consisting of more than one cell).

I hope this helps in any way :)

Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeast.
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