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  <xs:element id="mnts_ShareBasedPaymentArrangementEvergreenProvisionPercentageOfOutstandingShares" abstract="false" name="ShareBasedPaymentArrangementEvergreenProvisionPercentageOfOutstandingShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="mnts_AccruedEmployeeBenefitsEmployeeStockPurchasePlan" abstract="false" name="AccruedEmployeeBenefitsEmployeeStockPurchasePlan" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mnts_RestrictedStockUnitsAndRestrictedStockAwardsMember" abstract="true" name="RestrictedStockUnitsAndRestrictedStockAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="mnts_ShareBasedPaymentArrangementOptionsAndUnvestedStockUnitsMember" abstract="true" name="ShareBasedPaymentArrangementOptionsAndUnvestedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="mnts_BakerMckenzieMember" abstract="true" name="BakerMckenzieMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="mnts_NationalSecurityAgreementMember" abstract="true" name="NationalSecurityAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="mnts_SAFENoteLitigationMember" abstract="true" name="SAFENoteLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="mnts_FounderLitigationMember" abstract="true" name="FounderLitigationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mnts_StephenJPurcellMember" abstract="true" name="StephenJPurcellMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mnts_ConsiderationDueWithin10BusinessDaysMember" abstract="true" name="ConsiderationDueWithin10BusinessDaysMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="mnts_ReverseRecapitalizationPaymentsToCoFounders" abstract="false" name="ReverseRecapitalizationPaymentsToCoFounders" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mnts_ReverseRecapitalizationContingentConsiderationEquityEarnoutPeriodThresholdBusinessDays" abstract="false" name="ReverseRecapitalizationContingentConsiderationEquityEarnoutPeriodThresholdBusinessDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mnts_LossContingencyAllegedInvestmentAmount" abstract="false" name="LossContingencyAllegedInvestmentAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="mnts_SeptemberPrefundedWarrantsMember" abstract="true" name="SeptemberPrefundedWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mnts_PlacementAgentWarrantsMember" abstract="true" name="PlacementAgentWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mnts_ConvertiblePromissoryNotesMember" abstract="true" name="ConvertiblePromissoryNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="mnts_DebtInstrumentNumberOfPeriodicPayments" abstract="false" name="DebtInstrumentNumberOfPeriodicPayments" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="mnts_DebtInstrumentPrepaymentPenaltyFee" abstract="false" name="DebtInstrumentPrepaymentPenaltyFee" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mnts_LitigationSettlementReformsMaintainedForAMinimumPeriod" abstract="false" name="LitigationSettlementReformsMaintainedForAMinimumPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mnts_ClassOfWarrantOrRightGrossProceedsAndIssuedWarrantsCommissionPercentage" abstract="false" name="ClassOfWarrantOrRightGrossProceedsAndIssuedWarrantsCommissionPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="mnts_WarrantsAndRightsOutstandingFirstTerm" abstract="false" name="WarrantsAndRightsOutstandingFirstTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="mnts_WarrantsAndRightsOutstandingSecondTerm" abstract="false" name="WarrantsAndRightsOutstandingSecondTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
</xs:schema>
