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Marina86 [1]
3 years ago
9

An envelope could be a source of DNA evidence. True False

Chemistry
2 answers:
yuradex [85]2 years ago
7 0

Answer:

True

Explanation:

DNA can be extracted from bite marks, cigarette buds, postage stamps on envelopes, and envelope flaps for DNA analysis.

Wewaii [24]2 years ago
6 0

Answer:

false. a envelope is what the DNA evidence goes in

Explanation:

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Magnesium and bromine react to produce magnesium bromide. What is the balanced chemical equation for this reaction?​
tia_tia [17]

Answer:

MgBr2

Explanation:

On the periodic table, Magnesium has 2+ charge and Bromine has -1 charge.

You cross charges and get MgBr2

6 0
3 years ago
Is material that has a density of 0.2g/ml good for building a bridge or for making couch cushions
lisov135 [29]
D = 0.2 g / ml = 0.2 g / cm³
For example, density of steel is 7.85 g / cm³.
Density of pure water is 1.0 g/cm³. An object which has a density < 1.0 g/cm³ will float in water.
Answer: Material that has a density of 0.2 g/ml ( 0.2 g/cm³ ) is good for making couch cushions. 
8 0
3 years ago
Read 2 more answers
3. How many more troops did the Union states have than the Confederate states?​
lions [1.4K]
At the beginning of the war the Northern states had a combined population of 22 million people. The Southern states had a combined population of about 9 million. This disparity was reflected in the size of the armies in the field. The Union forces outnumbered the Confederates roughly two to one.


Also this should be listed for history
3 0
3 years ago
Read the following chemical equation. Mg(s) + H+ Cl− → Mg2+ Cl− + H2 What most likely happens during this reaction?
spin [16.1K]

Answer:

Magnesium loses two electrons.

Explanation:

  • As clear from the reaction Mg converted from <em>Mg(s) to Mg²⁺</em>, so Mg converted from the oxidation state (0) to (2+).

<em>∴ Mg losses two electrons.</em>

  • Cl⁻ remains as it is, so it is considered as a catalyst and neither loss nor gain any electrons.

<em>So, the correct choice is Magnesium loses two electrons.</em>

6 0
3 years ago
Read 2 more answers
What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?
tatuchka [14]

the force that pushes magma from the magma chamber through the pipe and vent of a volcano is expanding gases.




Hope this helps you succeed. :D

4 0
3 years ago
Read 2 more answers
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