Answer:
State the hypotheses. Every hypothesis test requires the analyst to state a null hypothesis and an alternative hypothesis. Formulate an analysis plan. The analysis plan describes how to use sample data to accept or reject the null hypothesis. Analyze sample data. Interpret the results.
Explanation:
Answer:
Your hypothesis is what your guess is for an answer and testing would be to test your hypothesis to see if its right
Explanation:
A student places 1.38g of unknown metal at 99.6C into 60.50g of water at 22.1C. The entire system reaches a uniform temperature at 31.6C. Calculate the specific heat of the metal
Explanation:
Heat energy lost by metal = Heat energy gained by water.
(0.00138kg) * c * (99.6-31.6) = (0.006050kg) * 4.148 * (31.6-22.1)
c = 2.541J/kg°C
Oil and water placed in a jar will separate. Even when
shaken and mixed, the oil still separates from the
water.
Which best describes oil and water?
Oil and water are highly soluble because they have
separate chemical properties.
Oil and water have a low solubility because they
have separate chemical properties.
Oil and water are highly soluble because they exert
different pressures
Oil and water have a low solubility because they
exert different pressures.
The answer is option B :)
According to the concept of solubility, oil and water have a low solubility because they have separate chemical properties.
What is solubility?
Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
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How do solve the uncertainly of a number?? plz help me
Answer:
How do solve the uncertainly of a number??
Explanation:
If you're adding or subtracting quantities with uncertainties. You add the absolute uncertainties. If you're multiplying or dividing, you add the relative uncertainties. If you're multiplying you multiply absolute uncertainties by the same factor, or do nothing to relative uncertainties.
Answer:
If you are taking a with power of a number with an certaintly ,you multiply the realtive uncertainty by number in the power .
kate and williams wedding cost about 21,000,000 english pounds how much is this in american dollars if
Answer:
2$
Explanation:
bru
What’s the phase change to solid to gas
a beaker contains 0.250 l of liquid. a student pours 0.00385 L of liquid out of the beaker. How much liquid remains in the beaker? choose the value reported with the correct number of significant figures
Answer:
The volume of the liquid remaining in the beaker is 0.24615 l
Explanation:
The initial volume of liquid in the beaker = 0.250 l
The volume of liquid the student pours out of the beaker = 0.00385 l
The volume of liquid remaining in the beaker, V, is given as follows;
V = The initial volume of liquid in the beaker - The volume of liquid the student pours out of the beaker
Therefore, we have;
V = 0.250 l - 0.00385 l = 0.24615 l
The volume of the liquid remaining in the beaker is 0.24615 l.
HELPPPP!
can we manufacture water? why or why not
Answer:
No because water needs to have no salt
Explanation:
Ex of physical Properties
1
How many significant figures are there in 9,000,500 mL?
is carbon dioxide gas an element or a compound
Answer:
Carbon Dioxide gas is a compound.
Two or more different elements chemically combine to form compounds.
True or false
Answer:
true
Explanation:
Convert 1200 grams to kilograms.
Isotopes of an element have 2 things that change. What are they?
Answer:
.
Explanation:
Isotopes are different in neutrons and mass number.
What is the charge of a carbon ion that has gained 4 electrons?
Answer:
Negative
Explanation:
Any atom gaining electrons will get a negative change since the charge of the electron is negative.
what is strong interaction in atoms
Answer:
Alternative Titles: nuclear force, strong interaction, strong nuclear force. Strong force, a fundamental interaction of nature that acts between subatomic particles of matter. The strong force binds quarks together in clusters to make more-familiar subatomic particles, such as protons and neutrons.
Please help me answerrr
Answer:
0.00439 g/mL
Explanation:
plz mark as brainliest if it helps.
Help Plzzzzzz!!!!!!!
What is the difference between magma and lava?
A Magma is molten rock within the earth; lava is molten rock on the earth's surface.
B Magma is cool, lava is very hot.
Magma is very hot, lava is cool.
D Magma is molten rock on the earth's surface; lava is molten rock within the earth.
Answer:
A
Explanation:
your welcome have a great day.
Mick has a glass of water. Which of the following tools could he use to measure the volume of water he has in the glass? A. a spring scale B. a triple beam balance C. a metric ruler D. a graduated cylinder
Answer:
D
Explanation:
Study Island
Answer:
D. a graduated cylinder is the correct answer
Explanation:
Imagine a friend is planning a rock-climbing trip. Write a note in the box explaining how gas exchange is affected at the top of a mountain, where air pressure is lower and there is less oxygen than at lower altitudes.
Answer:
Air is less dense on a mountaintop than at sea level.
Air pressure is lower at low altitudes.
As you climb a mountain, air pressure increases.
More force pushes on the air at the bottom of an air column.
As you descend a mountain, air molecules are closer together.
Explanation:
Cathy is reading a science article about exercise. She learns that exercise
causes a person to breathe faster. The next part of the article has the title
"Heart Rate." In that part of the article, Cathy is sure she'll read about how
exercise causes the heart to beat faster. What active reading strategy is
Cathy using?
A. Monitoring and applying fix-up strategies
O B. Summarizing
O C. Making predictions
D. Making mental images
What are the names of the products in the chemical equation shown below
Answer:
Yea I don't see any answers below but when you do I would love to help too!
Explanation:
HELP PLEASE!!!
Which best represents the law of conservation of mass?
A- mass of reactants > mass of products
B- mass of reactants < mass of products
C- mass of reactants = mass of products
D- mass of reactants -> mass of products
Answer:
c
Explanation:
the input of the mass is always equal to the mass of the outputs
Answer:
The correct answer is C
Explanation:
I did C like they said and it was correct!
Your bedroom air conditioner blows very cold air at night but only cool air during the day. Your bedroom gets lots of direct sunlight all day long. What's the hypothesis and experiment.
What is the experiment
Why was cowpox not deadly as smallpox?
ANYONE WHO ANSWERS THIS GETS BRAINLIEST ANSWER
You are measuring the effects of salt on water's ability to freeze. To one of your water samples, you add sodium chloride (NaCl, or salt). In this solution, which part is the solvent?
Question 8 options:
Water
NaCl
Both
Neither
Answer:
water
water is the worlds best solvent cause it can melt many different things also it is called the "Universal Solvent"
how many grams are equal to 413 kg
Answer:
413,000 grams
Explanation:
Answer:
413,000
Explanation: That's because 1 kg equals to 1,000 grams.
If you were running an experiment to determine the temperature at which
beans grow the fastest, what would be the dependent variable?*
The number of beans you plant.
The height of the sprouts you grow.
The amount of water you give the beans.
The temperature at which each bean is kept.
Answer:
Well, it would be the height of the plant. The independant varibles would be the amount of water you give the beans or the temperature you keep them!
Explanation:
I hope this helps!
All atoms that react
Answer: Electrons
Explanation:
How do protons, neutrons, and electrons differ in terms of their electrical charges and
locations within the atom?
Answer:
Protons and Neutrons are large particles and are densely compacted into the nucleus of the atom. Protons are electrochemically positive in charge and the Neutrons are electrochemically neutral in charge. ... Electrons are electrochemically negatively charged particles that move random around the nucleus
Explanation:
Protons are positively charged, neutrons are neutral and they both are located in the nucleus whereas electrons are negatively charged and located outside the nucleus.
Explanation:
Atom is defined as the smallest unit of a matter.It consists of three subatomic particles: protons, neutrons, electrons.Protons and neutrons are located inside the nucleus. They are also known as nucleonsElectrons are located outside the nucleus.Protons carry a positive charge, electrons carry a negative charge, and neutrons carry no charge (neutral).So from this, we conclude that the protons are positively charged, neutrons are neutral and they both are located in the nucleus whereas electrons are negatively charged and located outside the nucleus
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Which is the electron configuration for nobelium (No)?
O [Rn]7s25414
O [Rn]7s2547
O [Ne]3s 3p
O [Xe]6s25d1
Plz help
Answer:
the answer is [Rn]7s25f14 (first option)
Explanation:
i took the test
The electronic configuration for nobelium (No) is [Rn]7s²5f¹⁴, hence the correct option is A.
What is electronic configuration?The distribution of an element's atoms' electrons throughout several atomic orbitals is symbolically represented by the electronic configuration of that element.
A standardized nomenclature is used for expressing electron configurations, in which the energy level and type of orbital are written first, followed by the number of electrons in the orbital, which is expressed in superscript.
The atomic number of nobelium (No) is 102.
The number of protons is equal to the atomic number, which is 102.
The number of electrons is equal to the number of protons, which is 102.
Therefore, electronic configuration for nobelium (No) is [Rn]7s²5f¹⁴.
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The given question is incomplete, so the most probable complete question is,
Which is the electron configuration for nobelium (No)?
A. [Rn]7s²5f¹⁴
B. [Rn]7s²5f⁷
C. [Ne]3s²3p⁷
D. [Xe]6s²5d¹