Answer:
0.97 × 10⁹ strontium atoms
Explanation:
if 1 pm is equal with 10⁻⁹ mm
then 215 pm are equal to X mm
X = (215 × 10⁻⁹) / 1 = 215 × 10⁻⁹ mm
Now the diameter of the strontium atom is twice the radius:
diameter = 215 × 10⁻⁹ × 2 = 430 × 10⁻⁹ mm
if 1 strontium atom have a diameter of 430 × 10⁻⁹ mm
then X strontium atom are needed to be laid said by side to span a distance of 419 mm
X = (419 × 1) / (430 × 10⁻⁹) mm = 0.97 × 10⁹ strontium atoms
Answer:
for given question is 2.79 and 
is 0.52
{i- vant hoff’s constant ; Kb- constant ; m molarity }
M = no. of moles of the solute present in one kg of solution
Let the weight of amount of solute be “w” and its molecular mass be “M”
Let the mass of the solvent in the given question be “x”
The correct answer choice from the statement above about investigated factors from lab results is :
Students who spend less time studying after school get lower math grade
Option D is the correct answer
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This is an online platform where mathematics tutors help students to solve their difficulties in mathematics.
Mathematics is one of the most important aspect of knowledge in the education.
So therefore, The correct answer choice from the statement above about investigated factors from lab results is :
Students who spend less time studying after school get lower math grade
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<h3>Answer:</h3><h3>Sandy Soil is light, warm, dry and tend to be acidic and low in nutrients. Sandy soils are often known as light soils due to their high proportion of sand and little clay (clay weighs more than sand). These soils have quick water drainage and are easy to work with.</h3><h3>Explanation:</h3><h3>CARROTS
</h3><h3>Carrots have tap roots, which means that carrots grow better when their root systems can easily penetrate the ground. That need for depth makes sandy soil a perfect medium for growing carrots. Clods of soil, like those present in clay-based soil types, can impede and disrupt the development of carrot root development.
</h3><h3>
</h3><h3>RADISHES
</h3><h3>Like carrots, radishes also have tap roots, which need to be able to easily burrow into the ground. Sandy soils are porous and more malleable than clay-based mediums, so they are therefore suited to be a habitat for radishes, carrots, and other root vegetables.
</h3><h3>
</h3><h3>POTATOES
</h3><h3>Potatoes are another root vegetable that thrives in sandy soil. This is mainly because sandy soils have an acidic soil pH balance. Acidic soils eliminate the possibility of scab, a disease that plagues potatoes, often affecting entire crops.
</h3><h3>
</h3><h3>LETTUCE
</h3><h3>Lettuce, more than many other leafy green vegetables, tends to tolerate the dryness of sandy soils as long as gardeners make sure that plants are watered daily and regularly, never allowing the soil above the roots to completely dry out. Hydration is especially on abnormally hot or windy days. </h3><h3>
</h3><h3>COLLARD GREENS
</h3><h3>Like lettuce, collard greens are able to tolerate the dry conditions of sandy soils better than other leafy greens. Collards also perform well in the early spring, which makes them more suited for sandy soils, which warm up faster than clay-based or loam-based soil types.
</h3><h3>
</h3><h3>TOMATOES
</h3><h3>Tomatoes are sun-loving fruits that perform exceptionally well in the heat-retaining, well-draining habitat that sandy soils provide. Though they’re sometimes grown as annuals in the summer, tomatoes are usually grown as perennials that are harvested throughout a long growing season. </h3><h3>
</h3><h3>
</h3><h3>ZUCCHINI
</h3><h3>Zucchini is an annual summer crop and a heavy feeder that enjoys the warmth and excellent drainage of sandy soil habitats. As long as the plant’s fertilizer needs are met when it’s grown in sandy soil, zucchini will produce fruit that can be harvested in abundance.
</h3><h3>
</h3><h3>CORN
</h3><h3>Like zucchini, corn is a heavy-feeding annual summer vegetable that thrives in sandy soil as long as it is well fertilized.
</h3><h3>
</h3><h3>ASPARAGUS
</h3><h3>Grown best from the crowns in a sandy soil medium, asparagus is well-suited to growing in trenches. Use bone meal or rock phosphate to fertilize your asparagus twice per week when growing in sandy soils for the highest yields.
</h3><h3>
</h3><h3>WATERMELON
</h3><h3>Watermelon requires a longer growing season than other fruits of its type but enjoys the warmth and well-draining environment that sandy soil provides. Just make sure you provide sufficient space between plants for each watermelon to develop, as these plants will only thrive if they are not having to battle other plants for water and nutrients.
</h3><h3>
</h3><h3>BEANS
</h3><h3>Though beans do best in a loose, well-draining soil, such as a sandy one, be sure to add in lots of compost to your sandy soil before planting beans for maximum yield. </h3><h3>
</h3><h3>CUCUMBER
</h3><h3>Cucumbers need fast-draining soil to thrive, so a sandy medium is a great fit. However, you will need to go the extra mile in providing lots of water and nutrients for your cucumbers to keep them happy. A trellis must also be provided to give the cucumber vine a support to attach itself to and grow upon.</h3>
