d. when the net force on an object decreases, the objects acceleration decreases
i took the test and got it right
Primary alcohols can be dehydrated to produce ethers. The correct option is A, ethers.
Dehydration reaction are those reactions in which there is loss of water. When aldehyde reacts with sulfuric acid, it forms alkenes with loss of water, in excess of acids.
When aldehyde reacts with acids, with excess of aldehyde, forms ether.
Thus, the correct option is A) ethers.
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B) Gold has a lower activity than hydrogen and cannot replace it.
C) The reaction cannot occur because water is a reactant.
D) The reaction proceeds too slowly to create products.
2. Which of the following is the balanced form of the equation C2H6 + O2 --> CO2 + H2O?
answer choices are attached A,B,C,D top to bottom
3. The equation 2NaNO3 + CaCl2 ---> 2NaCl + Ca(NO3)2 is balanced. How many atoms of sodium (Na) are there on either side of the equation?
A) one
B) two
C) four
D) six
4. All single-displacement reactions can be classified as another type of reaction as well. What type of reaction is that?
A) combustion
B) redox
C) synthesis
D) decomposition
5. If ions change places and a gas is formed, then what type of reaction is indicated?
A) double-displacement
B) synthesis
C) decomposition
D) single-displacement
Answer:
A. The cumulative nature of science.
Explanation:
Your answer is A my friend as the atomic number of an atom is determined by the number of protons
I would say option A
Answer:
Explanation:If you can't get a reading on a fish fossil, there are other methods you can try to determine its approximate age. Here's a step-by-step process to estimate the fossil age:
1. Relative Dating: Start by using the principles of relative dating. This method involves comparing the age of the fossil to the ages of other nearby fossils or rock layers. By studying the position of the fossil in the rock layers and the types of fossils found around it, you can make an estimate of its relative age.
2. Index Fossils: Look for index fossils, which are species that existed for a relatively short period of time but were widespread. By identifying an index fossil within the rock layers that contain the fish fossil, you can narrow down the possible time range during which the fish lived.
3. Radiometric Dating: If relative dating and index fossils don't provide a precise age estimate, you can turn to radiometric dating. This method involves measuring the decay of radioactive isotopes in the rock or fossil to determine its age. For example, you could analyze the ratio of parent isotopes to daughter isotopes in the fossil. By knowing the half-life of the radioactive isotope and the current ratio, you can calculate the approximate age.
4. Carbon-14 Dating: If the fish fossil is relatively recent (less than 50,000 years old), carbon-14 dating can be used. This method relies on the decay of carbon-14, a radioactive isotope found in living organisms. By measuring the amount of carbon-14 remaining in the fossil, you can estimate its age.
5. Other Methods: If all else fails, there are other techniques that paleontologists may use to estimate fossil age, such as studying the fossil's morphology, comparing it to known fossil records, or analyzing the chemical composition of the surrounding rocks.
Remember that estimating the age of a fossil is not always a straightforward process, and different methods can provide different ranges of accuracy. It's important to consider multiple lines of evidence and consult with experts in the field to obtain the most accurate estimate possible.