Answers
Answer: x + 20
Explanation:
Related Questions
Which statement is true about the properties of water, hydrogen, and oxygen?
A) Water has the exact same properties as both oxygen and hydrogen.
B)Water has the same properties as hydrogen, but not oxygen.
C)Water has the same properties as oxygen, but not hydrogen.
D)Water has completely different properties than hydrogen and oxygen
Answers
How much energy (joules) is needed to heat 250 grams of water from 22 °C to 99 °C?
Answers
Answer:
[tex]\boxed {\boxed {\sf 80, 465 \ Joules}}[/tex]
Explanation:
We can use the specific heat formula, which is:
[tex]q=mc \Delta T[/tex]
Where q is the energy, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.
We know the mass is 250 grams. The specific heat capacity of water is 4.18 joules per gram degree Celsius. Let's find the change in temperature.
ΔT = final temperature - initial temperatureΔT= 99°C- 22°ΔT= 77°CNow we know all the values:
m= 250 g c= 4.18 J/ g °CΔT= 77°CSubstitute the known values into the formula.
[tex]q=(250 \ g) (4.18 \ J/g \textdegree C)(77 \ \textdegree C)[/tex]
Multiply the first 2 numbers together. The grams will cancel out.
[tex]q=1045 \ J/ \textdegree C (77 \textdegree C)[/tex]
Multiply again. This time the degrees Celsius will cancel out.
[tex]q=80465 \ J[/tex]
The energy needed is 80, 465 Joules.
A yellow haze in the air caused by particles from cars and factories is _____.
A. acid rain
B. smog
C. oxygen
D. carbon dioxide
Answers
Answer:
b. smog
Explanation:
Answer:
B. Smog
Explanation:
Smog is found in the ozone or a yellow haze in the air caused by particles from cars and factories.
Consider the following comparison.
The organization of a book and the human body are very similar. First, a book begins with a single word on a page. Second, these words work together to form sentences which are words that are similar to each other. Third, the sentences work together to form a paragraph. Fourth, the paragraphs work together to form an entire chapter. Finally, all of the chapters join together to form a full book. Which statement below correctly compares the levels of organization of a book to the levels of organization of a human.
A.
The chapters in a book are like the cell in a human organism.
B.
The sentences in a book are like the tissues in a human organism.
C.
The paragraphs in a book are like the body systems in a human organism.
D.
The single word on a page is like the full human organism.
Answers
Please help asap!! How many groups did Mendeleev's original Periodic Table of Elements have?
A) 18
B) 5
C) 13
D) 8
Answers
Hope this helps :)
A compound secreted by honeybees to paralyze intruders in their hive is known as 2-heptanone. The formula for this compound is shown.
How many atoms of each element are in one molecule of 2-heptanone?
F 4 carbon atoms, 11 hydrogen atoms, and 1 oxygen atom
G 7 carbon atoms, 14 hydrogen atoms, and 1 oxygen atom
H 7 carbon atoms, 11 hydrogen atoms, and 8 oxygen atoms
J 6 carbon atoms, 14 hydrogen atoms, and 3 oxygen atoms
Answers
Answer:
- 7 carbon atoms.
- 14 hydrogen atoms.
- 1 oxygen atom.
Explanation:
Hello,
In this case, for the given compound, heptanone, whose chemical formula is:
We can write the molecular formula showing the present atoms of each element:
In such a way we have:
- 7 carbon atoms.
- 14 hydrogen atoms.
- 1 oxygen atom.
Best regards.
Who started the website "pintrest"
Answers
What’s the difference between a double replacement reaction and a single replacement reaction?
Answers
Answer:
A single-replacement reaction replaces one element for another in a compound. A double-replacement reaction exchanges the cations (or the anions) of two ionic compounds.
Explanation:
BRAINLIEST FOR RIGHT ANSWERS PLS HELP
Complete the sentence. The lower the hydrogen ion concentration, the ______ the pH. answer choices
higher
lower
closer to 7
closer to 0
Answers
Answer:
Lower
Option B
Pls mark it as brainlist.
HELPPPPP
Which item is made from a basic ingredient?
answer choices
Soda
Wine
Leafy vegetables
Toothpaste
Answers
Answer:
Leafy vegetables?
Explanation:
If by a basic ingredient you mean a single ingredient then the answers is leafy vegetables
Explain how scientists learned about the magnetic poles of the Earth.
pls, help me w at least 1 sentence.
Answers
Answer:
ocean basalts
Explanation:
As the sea floor slowly spreads, the igneous rock(ocean basalts) of which it is comprised cools and congeals, recording the earth's current magnetic pole alignment.
Please help! 30 points!
Answers
Please answer this!!!!!!!!!!!!!
Answers
Answer:
oo ok and please i like your pfp
When was that one moment when you laughed the hardest
Answers
Answer:
last month!!
it was on yt
Answer:
My weightlifting coaches are all gay for each other and its hilarious to see 3 large buff men play fighting and wrestling around the weight room.
HELP I NEED HELP ON THIS QUESTION THIS QUESTION IS A TRUE OR FALSE QUESTION ......hERE IS THE QUESTION.......Temperature is the measure of the average kinetic energy of a substance. _______________
True
OR
False
Answers
Answer:
True
Explanation:
Temperature is measuring how fast the molecules or atoms of a substance are vibrating. Since movement is kinetic energy, temperature is a measurement of that kinetic energy.
The atmosphere is full of nitrogen gas (N2). But plants cannot use nitrogen in this form. Summarize the roles of bacteria in making nitrogen available to plants and in returning nitrogen to the atmosphere.
Answers
They absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll. When a plant or animal dies, decomposers like fungi and bacteria turn the nitrogen back into ammonium so it can reenter the nitrogen cycle.
Please answer!!!!!!!!!!!!!
Answers
humus is the organic component of soil formed by the decomposition of leaves and other plant material by soil microorganisms
Answer:
B. Decreased humus
Explanation:
The answer, please!!!!!!!!!1
Answers
Answer:
A. and C.
Explanation:
B. is talking about volcanic rock and D. is talking about Metamorfic rock so A. and c. must be a about sedimentart rock (to be honest i don't understand C. but it definetly isn't B. or D. so it must be C.)
BRAINLIEST FOR CORRECT ANSWERS
Match the term with its description.
Terms:
Acid
Alkaline
pH
Ion
Description:
A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution.
A compound that increases hydrogen ions (H+) when it is dissolved in a solution.
An atom or molecule that has a positive or negative charge .
A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water.
Answers
Answer:
A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water.- pH
An atom or molecule that has a positive or negative charge- Ion
A compound that increases hydrogen ions (H+) when it is dissolved in a solution- Acid
A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution- Alkaline
Explanation:
Hope this helps :)
2)pH
3) Acid
4)Ion
What are the advantages of an electromagnet?
PLS HELP ME... at least 1 sentence not from internet
Answers
Answer:
Versality, adjustable strength, greater control over the magnetic field and durability.
Explanation:
A sample of water is heated from 10 °C to 50 °C using 286 J of energy. What is the mass of water that was heated? help
Answers
Answer:
Mass of water == 1.71 g
Explanation:
Given data:
Initial temperature of water = 10°C
Final temperature of water = 50°C
Energy absorbed = 286 J
Mass of water = ?
Solution:
Specific heat capacity:
It is the amount of heat required to raise the temperature of one gram of substance by one degree.
Specific heat capacity of water is 4.18 J/g.°C
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 50°C - 10°C
ΔT = 40°C
by putting values,
286 J = m × 4.18 J/g.°C × 40°C
286 J = m × 167.2 J/g
m = 286 J / 167.2 J/g
m = 1.71 g
Please help with this question!
Answers
Which of the following is an example of the geosphere interacting with the cryosphere? (5 points)
Erosion due to glaciers creates valleys.
Frost damages the cells in plant tissues.
Plant roots make cracks in rocks and soil.
Metals are obtained from minerals by humans.
Answers
erosion is geosphere and glaciers are cyrosphere
cryosurgery=glaciers
Hope this helps :))
A student mixed 68 grams of vinegar with 7 grams of baking soda. The solution bubbled as sodium acetate (white solid), carbon dioxide, (gas) and water were produced. If sodium acetate and water in the flask weigh 60 grams, how much carbon dioxide was lost to the environment?
Answers
Answer:
15 grams of carbon dioxide
Explanation:
You would just add 68+7 and that gives you 75. Next subtract 75-68 and that gives you 15.
To decide on criteria for structure strength to avoid damage from earthquakes, engineers look at ________ to determine __________.
A.old factors; bridge importance
B. the budget; what they can afford to build
C. historical data; earthquake hazard risks
D. future reports; earthquake requirements
Answers
Choose three different items that are magnetic.
Answers
Answer: magnet, fridge and uh......metal
Explanation:
Answer:
Heres a few, I hope this is what you are talking about :)
Iron
Nickel
Cobalt
Neodymium
Speakers
Earbuds
Headphones
Cabinet Latch
Explanation:
which is right for brainliest
Answers
Answer:
Explanation:
Its A
From your list, select one biotic factor and one abiotic factor that you had a negative impact on. Propose a change you could make to prevent the negative impact in the future.
Be sure to include:
one biotic factor (1 point)
one abiotic factor (1 point)
Propose a change you could make to prevent the negative impact in the future. (1 point)
Your answer should include a complete sentence for each factor and explanation.
Be sure to check your grammar and spelling.
Sentence Starter:
One biotic factor I had a negative impact on was...
One abiotic factor I had a negative impact on was...
One way I could change my negative impacts in the future is by...
Answers
Answer:
what list?
Explanation:
Let’s say there are 2 planets similar in size, but one has much more mass. How will that affect the number of moons?
Answers
Answer:
0 because no value of mass at to be same
_ Li₃N + _ NH₄NO₃ --> _ LiNO₃ + _ (NH₄)₃N
Can you balance the equation?
thank you!
Answers
Answer:
1 (=nothing), 3, 3, 1 (= nothing)
Explanation:
(nothing means you dont have to write anything down)
Answer:
1,3,3,1
Explanation: