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Burka [1]
3 years ago
7

Why are scientists concerned with finding Earth-like planets?

Chemistry
2 answers:
HACTEHA [7]3 years ago
8 0
Because although these planets are much like earth, they may not be able to support life as they may not contain the necessary components to allow humans to live in the planets.
sdas [7]3 years ago
5 0
Over the last few days, NASA has been getting everybody excited with its plans to hold a high profile briefing about a discovery beyond our solar system. Now we know that the announcement concerns the discovery of seven planets orbiting a star elsewhere in our galaxy<span>.  hope this helps</span>
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In what situations are van der waals forces the most significant
viktelen [127]
Its most significant when all other forces are absent
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3 years ago
Which of these compounds is a product of protein synthesis?
yuradex [85]
The answer is c it is Carbon Dioxide
3 0
2 years ago
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Find the weight of HNO_3 present in 20ml, 0.30 N
yanalaym [24]

Answer:

mass of HNO₃ = 0.378 g

Explanation:

Normality = Molarity * number of equivalents

Molarity = Normality/number of equivalents

normality of HNO₃ = 0.30 N, Volume = 20 mL

HNO₃ ionizes in the following way:

HNO₃(aq) ----> H⁺ + NO₃⁻

Therefore, number of equivalents for HNO₃ is 1

molarity of HNO₃ = 0.30/1 =0.30 mol/dm³

Using the formula, molarity = number of moles/volume in liters

number of moles = molarity * volume

Number of moles of HNO₃ = 0.30 mol/dm³ * 20ml * 1 dm³ /1000 mL

number of moles = 0.006 moles

From the formula, mass = number of moles * molar mass

molar mass of HNO₃ = 63.0 g/mol

mass = 0.006 * 63

mass of HNO₃ = 0.378 g

6 0
3 years ago
An Earth-like planet is 500 light years away why is this an Obstacle for a manned Space mission?
maxonik [38]

Answer:c the correct technology cannot support this mission

Explanation:

3 0
3 years ago
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If the amount of Adams if each type on the left and right sides of a reaction difference what must be done to balance it
Ivanshal [37]

Hey there,

Your answer would be

Coefficients are placed in front of the reactants and/or products

Hope this helps,

<h2>- <em>Mr. Helpful</em></h2>

8 0
3 years ago
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