Answer:
organic chemistry
Explanation:
There are many branches of chemistry. Some of them are physical chemistry, analytical chemistry, inorganic chemistry and organic chemistry.
A chemist is testing the quality of a wine produced by a vineyard. It means he will test the structure, properties, and preparation of wine. All these tests comes under organic chemistry.
Hence, the correct option is (d) "organic chemistry"
Answer:
analytical chemistry
Explanation:
I took the test
- 1. Justin usually blows his nose using Kleenex tissues. His snot keeps leaking through the tissue. He decided he is going to create an experiment to find out if there is something better. What is his dependent variable? - A. Justin - B. Amount of snot the tissue can hold - C. Amount of tissue - D. Type of tissue
Answer:
B. Amount of snot the tissue can hold
Explanation:
In this specific scenario, the dependent variable would be the amount of snot the tissue can hold. That is because this is what Justin is trying to measure, which is also dependent on the type of tissue which would be the independent variable in this scenario. The different types of tissues can absorb different amounts of snot and this is what Justin ultimately wants to determine.
A
is a changeable factor in an experiment.
O THEORY
O LAW
O HYPOTHESIS
O CONTROL
O VARIABLE
Answer:
Variable is a changebale factor in an experiment.
Explanation:
Answer: O VARIABLE
Explanation:
Please Help!!! Time LImit. Extra Points and Brainiest.
Acids are a group of molecules with similar physical and chemical properties. Acids react with metal, but vegetable oil does not. What can you infer from this observation? Choose the two statements that apply.
A. The combination of atoms in acids and oil result in very different properties.
B. Acids and oil have different properties because they have different shapes.
C. The atoms present in molecules affect their properties.
D. Vegetable oil is most likely some type of acid.
Answer:
A and D
Explanation:
SHOW YOUR WORK!!!!!!!!!!!!!!!
An experiment performed to determine the density of lead yields a value of 10.95 g/cm3. The accepted value for the density of lead is 11.342 g/cm3. Find the percent error.
Answer:
3.45618%
Explanation:
Percent Error = measured value - accepted value/ accepted value x 100
Measured Value: 10.95
Accepted Value: 11.342
Work:
[tex]\frac{10.95-11.342}{11.342} *100[/tex]
[tex]\frac{-0.392}{11.342} *100[/tex] = -3.45618
You cannot have a negative percentage. Therefore the answer is 3.45618%
Greg ran for 25 minutes at a speed of 5 km/m. Find the distance.
Here it is⬆️ Distance is 125 km
Which would be an example of a homogeneous mixture?
Question 10 options:
Sprite
marinara sauce
air
ranch dressing
Answer:
Air
Explanation:
Air is an homogeneous mixture because it contain gaseous samples that have the same proportion throughout it's given sample. Air is a mixture of gaseous substances of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, 1% of water vapor and small amounts of other gases in same proportion.
+
equations
2. Na,CO3(aq) + 2K(s) → K2CO3(aq) + 2Na(s)
Answer:
Explanation:
Na2CO3(ag) +2k(s) →K2CO3 (aq) + 2Na(s)
How do you know when a boy likes you? A. He talks to you a lot B. He is mean to you C. He hugs you a lot D. He tries to take your stuff from you
Answer:
I feel it would be C or D but more likely to be D
Explanation:
Answer:
I guess it is A he talks to u alot but boys are different so it could be each one u know?
Is the equation above balanced or unbalanced? Explain? Worth 55 points.
Answer:
For me, it is balanced
Explanation:
Because the amount of element Zn reaction is equal the production. Also as the amount of Hydrogen and Chloride in the reaction and the production are equal.
plz tell me I will also give brainiest. forces can be ________ or unbalanced
Answer:
balanced
Explanation:
hope this helps
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{ \: Balanced}}}}}[/tex]
Explanation:
Forces can be balanced or unbalanced.
[tex] \bigstar {\sf{ \: \: Balanced \: force}}[/tex]
When a number of forces acting on a body do not change its state of rest or uniform motion in a straight line , the forces are said to be balanced forces. For example : In the game of tug of war, two teams pull a rope in opposite directions. When the two teams exert equal and opposite forces on the rope, the rope remains steady and does not move in any direction. It appears as if no force is acting on the rope. Thus, the two forces acting on the rope in this case are balanced forces.
[tex] \bigstar{ \sf{ \: Unbalanced \: force}}[/tex]
When a number of forces acting on a body change it's state of rest or uniform motion in a straight line, the forces are said to be unbalanced forces. For example, if we push a toy car towards east, it moves towards east. If it is pushed towards west, it moves towards west. This unbalanced force produces motion.
Hope I helped!
Best regards! :D
~TheAnimeGirl
A marathon is approximately 42.195 km Convert the distance to
centimeters.
Answer:
4219500 centimeters
Explanation:
I hope this helped!
There are 5 areas of chemistry:physical chemistry, organic chemistry, analytical chemistry, biochemistry and inorganic chemistry.identify which of the five area of chemistry best fits the action done by zoe, a chemist. zoe is using an instrument called a spectrophotometer to precisely determine the levels of various chemicals in a sample of drinking water.
If someone could help me I would really appreciate it. Thank you!
Answer:
Analytical chemistry
Explanation:
because in analytical chemistry checks that different chemicals in water,salt etc....
18 grams
4 kilograms
8 kilograms
Answer:
1 18 grams
2 500g
4 960 grams
5 7 kilograms
saftey goggles are worn in the lab-
Answer:
Yes
Explanation:
Is this a question or what?
Answer:
this is true and should always be true
Explanation:
if they are not on in the lab you or others may get injured
What do a hypothesis and scientific law?
Answer:
If you mean "What is a hypothesis and the scientific law?" than hypothesis means a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation and scientific laws or laws of science, are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. The term law has diverse usage in many cases across all fields of natural science.
Answer:
If you mean "What do hypothesis and scientific law have in common" than a hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept.
Given 1 cm3 = 1 mL
A box has dimensions 2.0 cm x 4.0 cm x 8.0 cm.
Answer: 64
Explanation:
you just multiple the 3 numbers to get the answer (i’m in chemistry and just did this question lol)
How do atoms emit light ?
Answer:
The frequencies of light that an atom can emit are dependent on states the electrons can be in. When excited, an electron moves to a higher energy level or orbital. When the electron falls back to its ground level the light is emitted.
How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/g°C?
Answer:
0.90 degree C
Explanation:
The key to this problem lies with aluminium's specific heat, which as you know tells you how much heat is needed in order to increase the temperature of 1 g of a given substance by 1∘C
In your case, aluminium is said to have a specific heat of
0.90 J g∘ C.
When an atom of a Radioactive element emits alpha radiation, an atom of a different element is formed. A different element is formed because the radioactive element has lost...
Explanation:
its its originality as an atom has to be pure
A different element is formed because the radioactive element has lost its originality as a pure atom when a radioactive element emits alpha radiation.
What is a radioactive element?Some elements of unstable atomic nuclei undergo radioactive decay to form stable nuclei because of the presence of excess nuclear charge inside them are known as radioactive elements.
The stability of nuclei of an element can be estimated by neutron to proton ratio. The atomic number up to Z= 20 is stable nuclei and contains an equal number of protons and neutrons. As the atomic number starts to increase, the repulsion forces between protons increase.
Thus, the neutron-to-proton ratios of stable nuclei increase with increasing atomic numbers. If elements with the atomic number, Z > 83 and n/p > 1.5 and they will be most unstable and radioactive.
For example, Pu-240 emits an alpha particle and gets converted into U-236 which is completely different from the original nuclei.
²⁴⁰Pu₉₄ → ⁴He₂ + ²³⁶U₉₂
Therefore, the radioactive element lost its identity after disintegration.
Learn more about the radioactive element, here:
https://brainly.com/question/23759636
#SPJ2
Please please help :(
Answer: ¹²₅C
Explanation:
¹²₅C is incorrect. The superscript is the atomic mass. This varies between each element. The subscript is the atomic number. This doesn't change. You will see every element has the correct atomic atomic number except for Carbon. Carbon should have atomic number 6.
Which of the following is true about matter?
Answer:
Full question plssssss what should we find
2) A wooden block has a volume of 176 cm3 and a density of 18.2 g/ cm3. What is the mass?
Answer:
9.67 g
Explanation:
176 cm³ / 18.2 g/cm³ = 9.6703296703...
I rounded to the nearest hundredth
What type of element is used in the electronics industry because it is a semiconductor
Answer:
Pure Silicon in Electronics
Silicon material is commonly used as a semiconductor in electronics: devices such as transistors, printed circuit boards, and integrated circuits make use of silicon's highly conductive properties to maximize their performance.
Explanation:
A balloon has a volume of 10,500 liters, and the temperature is 15°C. If the temperature were -25°C, what would the volume of the balloon be?
12,194 L
9,042 L
Answer: 12,194 L
Explanation:
The anther of flower contains
Answer:
here is your answer please mark me as brainlist
Explanation:
Answer # Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.
The ground-state electron configuration for an element contains an unpaired 3s electron.
Answer:
Na
Sodium is located in the third row of the periodic table, where the 3s3s3, s orbital is being filled. Because sodium is the first of the two 3s3s3, s elements, its ground-state electron configuration contains a single, unpaired 3s3s3, s electron.
Explanation:
its late but ik someone can use it
The ground-state electron configuration for an element contains an unpaired 3s electron is Sodium, Na.
The ground state electron configuration of an element shows a series of how its electrons are arranged in thier orbitals at their lowest energy state.
The element which contained an unpaired 3s electron is the Alkali metal, Sodium.
Sodium, Na has atomic number of 11 and at ground state and will therefore be written as 1s²2s²2p⁶3s¹ We can also write the condensed form since the core electrons is the same with Ne, a noble gas which is [Ne]3s1.
The s orbital should contain at most 2 electrons , since for sodium, it has 1 electron in the 3s orbital, we say it is unpaired.
See more here:https://brainly.com/question/2071096
What’s the independent variable, dependent variable, experimental variable and constant?Scenario #1: Traci thinks that instrumental music played in the office will increase the productivity
of workers at the office. She creates two groups of 50 workers each and assigns each group the
same task in this case, they are asked to staple a set of papers). Group A has instrumental music
playing while they work. Group B does not have any music playing for them. After an hour, Traci
counts how many stacks of papers each group has made. Group A made 2,113 stacks. Group B
made 1,587 stacks.
Answer:
independent variable- instrumental music
dependent variable- Number of stacks of papers made
experimental variable- Group A has instrumental music
playing
constant- same task,
Explanation:
can someone help me please
Answer:
A
Explanation:
the circles are more tightly packed together in box A than in box B in the same amount of space
WILL MARK BRAINLIEST
7. When the numbers 5.56 x 10^2 and 3.81 x 10^3 are added the result is:
a) 4.36 x 10^3
b) 4.366 x 10^3
c) 4.366 x 10^2
d) 4.37 x 10^3
Answer:
option b
Explanation:
556+3810
=4366
=4.366*10^3
Hope it helps
Pls mark as brainliest
A graduated cylinder is placed on an electronic balance, and the scale reads 78.32 g. 10.0mL of glycerine are added, and the scale reads 91.78 g. What is the density of glycerine
Answer:
1.346 g/mL
Explanation:
The density is defined as the mass of a substance per unit of volume.
In the problem, you add 10.0mL of glycerine. the mass change from 78.32g to 91.78g. The difference is the mass of the glycerine:
Mass glycerine: 91.78g - 78.32g = 13.46g
As the volume added was 10.0mL, the density, δ, in g/mL is:
δ =13.46g / 10.0mL =
1.346 g/mL