Answer:
Humans
Explanation:
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José performs an experiment to determine how much sugar can be dissolved in 250 milliliters (mL) of water at 25°C. He adds 50 grams (g) of sugar at a time to the water while stirring and observes the solution. After adding sugar the eleventh time (550 g), he notes that undissolved sugar has settled to the bottom of the container. He stops adding sugar and ends his experiment. In his lab write-up he concludes that the solubility of sugar in water at 25°C is 500 g per 250 mL. Is his conclusion defensible, and why or why not?
A) No, because he did not add sugar enough times.
B) Yes, because when he added more than 500 g it did not all dissolve.
C) No, because he does not know if any of the final portion of sugar dissolved.
D) Yes, because when he added the tenth portion (500 g) all of it dissolved
Answer: C i got it right :)
Explanation:
His conclusion is not defensible because he does not know if any of the final portions of sugar dissolved. The correct option is C).
What is a scientific experiment?A scientific experiment is any method that uses measurements and tests to confirm or deny a theory. A hypothesis is a proposition that looks to be true but has yet to be confirmed, from which a study can be created.
In terms of the experiment, the first thing we want to do is look at the independent and dependent variables, because there are some things we can determine.
Because we are switching from one experiment to the next, the temperature will be the independent variable. We are experimenting with various temperatures to determine if they influence the payment ability of this sugar.
Therefore, the correct option is C) No, because he does not know if any of the final portions of sugar dissolved.
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Do sound waves travel faster through solids or gases? Explain why.
Sound waves travel faster through solids because the particles in a solid are closer together than in a gas.
Sound waves travel faster through gases because the particles in a gas are closer together than in a solid
Sound waves travel faster in a solid because solids are less dense than gases.
Sound waves travel faster in gases because the particles of a gas move faster.
Answer:
my answer is A.................
6
Which of the following is equivalent to 2x(x2 – 3x) ?
Answer:
2x²-6x²
Explanation:
Name two kinds of either plants or animals that humans
have bred besides dogs.
The two kinds of animals that humans have bred besides dogs are cats and cows. Artificial selection is used in selective breeding to control the genetic transmission of desirable features.
What is selective breeding?The technique by which the humans regulate the breeding biological organisms throughout order to show or erase a certain attribute is known as selective breeding. Artificial selection has been used in selective breeding to control the genetic transmission of desirable features.
Humans have selectively bred animals for many years. Selective breeding helps to produce favored traits in the animals. One example of animals that are selectively bred is hens. They produce more eggs and do so more quickly than the normal chicken. Producing more eggs is the trait which is most likely achieved in hens through selective breeding.
Therefore, The two kinds of animals that humans have bred besides dogs are cats and cows. Artificial selection is used in selective breeding to control the genetic transmission of desirable features.
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Maria is staying at a hotel that charges $99.95 per night plus tax for a room. A tax of 8% is applied to the room rate, and an additional onetime untaxed fee of $5.00 is charged by the hotel. Which of the following represents Maria’s total charge, in dollars, for staying x nights?
THIS IS AN SAT THIS IS URGENT
Answer: 1.08(99.95x) + 5 total nights
Explanation:
You deposit $2200 into three separate bank accounts that each pay 3% annual interest. How much interest does each
account earn after 6 years?
hi what is the probability that you will see this.
Answer:
1 in 5274
Explanation:
revolting furry cow
If 2(−3x+c)=−3(2c2+cx)c+5c, what is the value of x in terms of c?
Answer:x-264.62
Explanation:you can set up a proportion
16.0/130 = x/2150
by cross multiplying you get
130x = 34400
divide by 130 and get
x-264.62
The value of the variable x in terms of c will be x = (7c − 6c³) / (3c² − 6).
What is the solution to the equation?The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.
Making anything easier to accomplish or comprehend, as well as making it less difficult, is the definition of simplification.
The equation is given below.
2(−3x + c) = −3(2c² + cx)c + 5c
Simplify the equation for x, then the equation will be
2(−3x + c) = −3(2c² + cx)c + 5c
−6x + 2c = −6c³ − 3c²x + 5c
3c²x − 6x = 2c + 5c − 6c³
(3c² − 6)x = 7c − 6c³
x = (7c − 6c³) / (3c² − 6)
The value of the variable x in terms of c will be x = (7c − 6c³) / (3c² − 6).
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which of the following is equivalent to the sum of expressions a to the power of 2-1 and a+1
Answer:
Hmmm it would be 2 I think but I am not sure
When you STAY being lied to -_- Like why? Anyways have a good day yall! XD
Answer: LIKE WHY??
Explanation: XD such a good emoji!!!!
Look at the image below.
A
A
B
Which point on this wave is the crest?
Point
Point D
Point B
Point A
Answer:
A
Explanation:
Write a scientific explanation describing if the night sky looks the same all year.
claim:
evedince:
resoning:
Answer:
The night sky is different at different times of the year. You see different constellations every now and then. This change is due to the motion of the Earth in its orbit around the Sun. Each day a few stars are visible in the east that were not visible the night before.
Explanation:
While reviewing for exams, a teacher knows that the number of topics he can cover is directly proportional to the length of time he has to review. If he can cover 9 topics in a single 45-minute period, how many topics can he cover in a 1-hour period?
Answer:
i agree he or she is correct
Explanation:
What date is UCLA’s deadline for their regular applications for the 2019-2020 school year?
Answer:
you can submit them from November 1 to November 30 but they open at August 1
difference between primary data and secondry data
Answer:
Primary data is the type of data that is collected by researchers directly from main sources while secondary data is the data that has already been collected through primary sources and made readily available for researchers to use for their own research.
Explanation:
The internet
how do i fix a broken heart
What are 3 majors that you can study at UCLA
Answer: business economics, political science
Explanation: Hope that helps
If both independent and dependent variables can change in an experiment, what is the difference
between them?
A) A dependent variable is the variable a scientist chooses to change.
B) An independent variable is the variable a scientist chooses to change.
C) An independent variable changes depending on the constants used in the experiment.
it sc
Answer:
B
Explanation:
Independent variable- The variable being manipulated by the researcher
Dependent variable- The variable that is dependent on the changes made by the researcher. The dependent variable is not directly changed but may be influenced by changes made to the independent variable.
If you could travel to any fictional world and come back as often as you like, what kind of world would you travel to?
I would have a difficult time choosing between an advanced sci-fi universe with space travel and multiple colonized planets, and a magical fantasy universe with magic and magical creatures.
Answer:
just pick your first choice
Explanation: