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lina2011 [118]
3 years ago
8

Which of the following is not correct? OThere are 1000 mg in a gram.

Chemistry
2 answers:
Julli [10]3 years ago
7 0

Answer:

d can i have brainliest

Explanation:

labwork [276]3 years ago
6 0

Answer:

d

Explanation:

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Uranium-234 is unstable and undergoes two subsequent alpha emissions. What is the resulting nuclide from this transformation?
MArishka [77]

Answer:Radium

Explanation:

The nuclear reaction involving two alpha emissions of 234 U is shown in the diagram. This leads to the formation of a 226Ra nucleus.

4 0
3 years ago
Balance the equation KHCO3+ H3PO4 arrow K2HPO4+H20 C02.
kherson [118]

Answer:

2KHCO3+ H3PO4 arrow  K2HPO4 + 2 H20 + 2C02

Explanation:

2KHCO3+ H3PO4 arrow  K2HPO4 + 2 H20 + 2C02

Start with the Ks. Don't start on the right. Just balance the Ks on the left. The reason is that the CO3 is going to break down as well.

2KHCO3+ H3PO4 arrow  K2HPO4 +  H20 + C02

Leave the PO4 alone. Now look at the Hs that are on the right. There are 5 on the left. Leave the K2HPO4 alone. If you put a 2 in front of tthe H2O then you have a total of 5 Hs on the right.

2KHCO3+ H3PO4 arrow  K2HPO4 + 2H20 + C02

There are 2 carbons on the left. You need 2 on the right.

2KHCO3+ H3PO4 arrow  K2HPO4 + 2H20 + 2C02

That should do it.

Let's make a table to show balance.

Species      K              H          C         PO4-         O  

Left             2              5           2          1                6 from CO3^(2-)  

Right           2              5           2          1                6 from H2O/CO2

4 0
3 years ago
True or False: A heterozygous genotype produces the dominant phenotype because the dominant allele masks the recessive allele.
jasenka [17]
This is true! Heterozygous would be Dd, and the dominant masks the recessive
4 0
3 years ago
Which is an example of a chemical change?
valentina_108 [34]

Answer: A

Explanation: frying an egg

7 0
3 years ago
Read 2 more answers
Describe 3 characteristics of the carbon atom that makes possible the building of variety of biological molecules
Marianna [84]

3 characteristics of the carbon atom that makes possible the building of variety of biological molecules are:

• Carbon atoms can easily form covalent bonds with nitrogen, hydrogen, oxygen,  sulfur and with carbon. The bonds can be single, double or triple between the atoms. This combination of carbon with other elements and with itself results in the formation of huge number of biological molecules.

• The size of carbon atom is very small in comparison to most other atoms. Thus, the bond formed between two carbon atoms is quite short. And the shorter bonds are more stronger than the longer bonds between two atoms, that's why carbon bonds are stable at the different temperatures associated with life.

• Only carbon can form stable four covalent bonds with the other elements, which makes it versatile element to serve as the basic structural component, of the macro-molecules.

4 0
3 years ago
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