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pav-90 [236]
2 years ago
6

Which shows the correct order of stages of technological design?

Chemistry
2 answers:
LenaWriter [7]2 years ago
8 0

Answer:

The correct answer is:C. Identify a problem, design a solution, implement the solution, evaluate the solution

Explanation:

romanna [79]2 years ago
3 0

Answer:

The four stages of technological design include identifying a need, designing and implementing a solution, and evaluating the solution.

I don't know what the options are, cause you didn't show them but, hope this helped.

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Name element atomic mass 26 mass number 58 with charge of 2+
frosja888 [35]

Answer:

subtract the answer it'll get you that.

Explanation:

6 0
3 years ago
When Earth is between the Moon and the Sun, the fully lit face of the Moon is seen from Earth. This phase of the Moon is called
alexandr1967 [171]
B) full
When the moon is fully lit up, you can see all of it, therefore it is a full moon.

6 0
3 years ago
In this reaction: Mg (s) + I₂ (s) → MgI₂ (s), if 10.0 g of Mg reacts with 60.0 g of I₂, and 53.88 g of MgI₂ form, what is the pe
ad-work [718]

We know the law of conservation of mass

  • It states that mass is neither formed nor destroyed in any chemical reaction.
  • Mass of reactants=Mass of products.

Here

  • Mg and I_2 are reactants
  • MgI_2 is product with some yield.
  • Mass of reactants=10+60.0=70.0g
  • Mass of MgI_2=53.88g
  • Mass of yield=Product-MgI_2=70-53.88=16.12g

Lets find the percentage

\\ \tt\hookrightarrow \dfrac{Mass\:of\:yield}{Total\:mass}\times 100

\\ \tt\hookrightarrow \dfrac{16.12}{70}\times 100

\\ \tt\hookrightarrow 0.23028(010)=23.028\%

6 0
2 years ago
Read 2 more answers
The formula of the salt produced from the neutralization reaction between nitric acid and barium hydroxide is:
expeople1 [14]

Answer:

2HNO3 + Ba(OH)2 => Ba(NO3)2 + 2H2O

Explanation:

3 0
2 years ago
I know how to do electron configuration, but I think I’m doing the rest wrong. Answers and explanations would be much appreciate
Natasha_Volkova [10]

Your answers seem great so far, except for a tiny issue: With the ionic symbols, try to get into the habit of using "+", with metals, like sodium, and try to use the integer first. So, for example, a potassium ion would be K^+, while an oxide ion would be O^2-


Let's take aluminium as an example I'll work through:

Aluminium, with it's atomic number of 13, will have an electronic configuration of 1s2 2s2 2p6 1s2 2p1. So it would have 2, 8, 3 electrons in the first three energy levels, respectively.

Usually, if an elemental atom has a valence electron (highest energy level electron) count less than 4, it almost always will lose electrons. Since aluminium has 3, it will also lose the electrons.

It loses the 3 valence electrons, and so will end up with 10 electrons.

Since the atomic number also tells how many protons it has, we know that an aluminium atom has 13 protons, which doesn't change.

Since the size of the charges of a proton and an electron are the same, with protons being positive and the electrons being negative, an aluminium ion would have a charge of +3, and the Ionic symbol would be Al^3+



Hope I helped! xx


4 0
3 years ago
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