A sample of iron has a volume of 12 mL. If the mass of this object is 94 g, what is the density of iron? Will it sink or float in water? *
Answer:
density = 7.83g/mL
It will sink in water.
Explanation:
D = mass/volume
94/12 = 7.83 g/mL
density of water is 1g/mL
Object is more dense than water, meaning it will sink.
I NEED HELP FAST
complex conversions between units may require using __________ conversion factor
Answer:
More than one
Explanation:
Answer:
More than one
Explanation:
Quizlet says so
How many centimeters are in 1 inch?
The metric system is used to measure the objects based on various parameters. A centimeter is a unit of length. One inch is equivalent to 2.54 cms.
What is the metric system?The Metric system is the system used to estimate the weight (mass), length, and capacity of the object and was first introduced in France by Gabriel Mouton, a mathematician, and an astronomer. The metric system measures length, mass, volume, time, etc.
The metric system of length use the SI unit of meter, other units used to measure the length are centimeter, kilometer, millimeter, inches, yard, mile, feet, etc.
Given,
Length = 1 inch
It is known that an inch is equivalent to 2.54 centimeters, hence, 1 cm = 2.54 cms.
Therefore, there are 2.54 centimeters in one inch of the object.
Learn more about metric conversion here:
https://brainly.com/question/13266298
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Filling up a balloon with hot air.
Physical or chemical
Answer:
Physical.
Explanation:
Nothing changes in a chemical state just adding hot air to a balloon.
I'm pretty sure this is classified as a chemical change.
4. The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
A. 25 g
B. 50 g
C. 75 g
D. 100 g
Identify the atom below.
The answer is He!
Hope this helps ya out
A ____ is a region of strong magnetic activity on the photosphere the Sun.
(A) sunspot
(B) flare
(C) Coronal mass ejection
(D) Solar wind
how many atoms does a gold bar and gold nuggets contain
Answer:
The answer is 1
Explanation:
Gold is gold, the size doesn't change what it is.
This is not a multiple choice question
Find the average atomic mass of Boron.
Boron comes in two isotopes, Boron-10 and Boron-11. Boron-10 has an exact mass of 10.01294 and has a percent abundance of 19.83%. Boron-11 has an exact mass of 11.00931 and a percent abundance of 80.17%.
Answer:
12
Explanation:
Answer:
11.01
Explanation:
just did the assignment :D
Photosynthesis occurs in
the mitochondria
chloroplast
Explain the similarities and differences between combination, decomposition,
and replacement reactions.
HELP PLEASE POINTS++++++++++++++ IMA MAKE BRAINLIEST
A B C The circles shown above represent three different elements. The six images below are mixtures, how many of the images represent homogeneous mixtures.
edit; found the answer, since no one answered is: 2. for anyone wondering.
Answer: 2
Explanation:
pls help asap !! unsure how to do this
please help me im so lost!
Answer:
An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. ... The nucleus of an atom contains protons and neutrons.
Explanation:
i'm smart you are too in your own way.
What is the Albedo of Earth?
Group of answer choices
The energy that is absorbed into Earth.
The energy that is reflected back into space from Earth.
Just a cool word.
Minion talk for energy.
SCIENCE
6TH GRADE
BRAINLIEST!!
Answer: Earth's average albedo is about 0.3. In other words, about 30 percent of incoming solar radiation is reflected back into space and 70 percent is absorbed. A sensor aboard NASA's Terra satellite is now collecting detailed measurements of how much sunlight the earth's surface reflects back up into the atmosphere.
Explanation: ik im annoying thanks
PLEZ HELP QUICKLY!!!! ILL MARK BRAINLIEST
Option B, P and Cl
They form covalent bond
Whose personal story did you read (if you read several, pick your favorite)? What was the most interesting or eye-opening part of that person's story?
What type of weather is associated with a continental polar air mass?What is a front?
Answer:
I would guess that a polar air mask would be freezing, high winds type weather. I think that's right.
Answer:
Cool and dry
Explanation:
Exactly what it is on Edge
I know I am late to answer but for the points and for the people that need it
Please help!! will give brainliest!! The temperature if the water to the nearest degree:__°C
Answer:
102 degrees, the intervals go by 2
Why would heating up the human body be a bad choice for causing a chemical reaction?
Answer:
Explained below
Explanation:
The human body has a normal core temperature of around 37°C to 38°C.
Now, if it is heated up to say 39° to 40°C, fatigue will start to set in and the brain begins to tell the muscles to slow down.
If it's now heated to higher temperatures above above 41°C, the body will begin to experience heat exhaustion and therefore will start to shut down.
Due to this process, the body can't even sweat at that stage because blood flow to the skin will stops thereby making the body feel cold and clammy. Thus, chemical processes/reaction in the body will begin to be affected and the cells inside the body will start to deteriorate and thus there is now a huge risk of having multiple organ failure.
When all the values in a data set are written in order from least to greatest, the value that is in the middle, wth an equal number of values below it and equal number of values above it, is called the Omedian O mean O mode Orange
Option A, median is the correct answer
NEED ANSWER FAST✴️✴️✴️✴️
What do phytoplankton do for the carbon cycle? Choose all that apply.
A. They take in oxygen for photosynthesis.
B. They take in carbon dioxide for photosynthesis.
C. When they die, the carbon left in them can be sequestered (stored) in the ocean bottom.
D. They are food for many animals, including some whales.
A type of matter formed by chemically joining two or more elements is known as a A compound B) solution c) colloid D suspension
Answer:
A) compund
Explanation:
Please help it’s due today, I will give brainliest
the two middle ones is the answer
What is the density of an object of an object having a mass of 6.0 grams and a volume of 35 cm3?
Answer:
0.17 ( 2 s.f.)
Explanation:
d=m/v
=6/35
=0.1714285
=0.17
Answer:
Hey bro
Explanation:
I don't like boys and the answer most definitely is 69
Which of the following is the correct Lewis Dot Structure for MgBr2?
PHOTO ABOVE
Answer:
Option A
Explanation:
To know the correct answer to the question, let us write an equation illustrating the formation of MgBr₂.
This is illustrated below:
1. Magnesium (Mg) is divalent element hence it will lose 2 electrons to form magnesium ion (Mg²⁺) as shown below
Mg —> Mg²⁺ + 2e¯
2. Bromine (Br) is a univalent element. Two bromine atom will receive the two electrons (i.e each atom receives 1 electron) to form the bromide ion (Br¯) as shown below:
2Br + 2e¯ —> 2Br¯
Combine both equation
Mg + 2Br + 2e¯—> Mg²⁺ + 2e¯ + 2Br¯
Cancel out 2e¯
Mg + 2Br —> Mg²⁺ + 2Br¯
Thus we have
Br—Mg—Br
From the illustration made above, we can see that two bromine atom is receiving 1 electron each from the magnesium atom
How much a material takes time to burn?
Need Variables for the Experiment
(a) Independent Variable:
(b) Dependent Variable:
(c) Constant Variable:
(a)- Time
(b)- Heat produced(i guess)
(c)- Material
this is what I think, hope it helps
Boron
B
10.811
Number of neutrons
Answer:
6
Explanation:
To determine the number of neutrons we round 10.8 to 11 and subtract the atomic number (5) and get 6; therefore, boron has 6 neutrons.
Perform each of the following operations as indicated. Express your answers to the correct number of significant figures and unit.
1. 5 x 10–7 kg + 3 x 10–7 kg
2. 4 x 105 kg + 6 x 105 kg
3. 1.66 x 1019 kg + 2.30 x 1019 kg
4. 7.2 x 10–12 kg - 2.6 10–12 kg
5. 3.8 x 10–12 m2 - 1.90 x 10–11 m2
6. 2.26 x 10–18 m2 - 1.8 x 10–18 m2
